| artist,genre,country | |
| L A N D S R A A D,Progressive Electronic,United Kingdom | |
| L.S. BEARFORCE,Krautrock,Germany | |
| LA CADENA PSYCH JAMBAND,Psychedelic/Space Rock,Spain | |
| LA CRUNA DEL LAGO,Rock Progressivo Italiano,Italy | |
| LA DÜSSELDORF,Krautrock,Germany | |
| LA FLAG,Post Rock/Math rock,Portugal | |
| LA HORSA BIANCA,Psychedelic/Space Rock,Ukraine | |
| LA MAR,Post Rock/Math rock,Venezuela | |
| LA PONTO ENSEMBLO,Progressive Electronic,Multi-National | |
| LA YNE,Crossover Prog,Finland | |
| LA! NEU?,Krautrock,Germany | |
| LABIRINTO,Post Rock/Math rock,Brazil | |
| I ABIRINTO DI ALICE,Rock Progressivo Italiano,Italy | |
| LABIRINTO DI SPECCHI,Rock Progressivo Italiano,Italy | |
| LABORATOR,Crossover Prog,France | |
| LABORATORIUM,Jazz Rock/Fusion,Poland | |
| LABRADFORD,Post Rock/Math rock,United States | |
| JAME ABRIE,Progressive Metal,Canada | |
| LABYRINTH,Progressive Metal,Italy | |
| LAC PLACIDE,Progressive Metal,France | |
| TH ACONIC,Eclectic Prog,United States | |
| LACRIMOSA,Progressive Metal,Germany | |
| LACRYMOSA,RIO/Avant-Prog,Japan | |
| LADDIO BOLOCKO,Krautrock,United States | |
| TH ADIES,Post Rock/Math rock,United States | |
| LADY LAKE,Symphonic Prog,Netherlands | |
| LADY WITH,Jazz Rock/Fusion,France | |
| LAGARTIJA,Rock Progressivo Italiano,Italy | |
| LAGGER BLUES MACHINE,Zeuhl,Belgium | |
| LAGHONIA,Psychedelic/Space Rock,Peru | |
| LAGITAGIDA,Heavy Prog,Japan | |
| LAHOST,Neo-Prog,United Kingdom | |
| RICHAR AINHART,Progressive Electronic,United States | |
| LAKE OF TEARS,Progressive Metal,Sweden | |
| GRE AKE,Prog Related,United Kingdom | |
| LAKTATING YAK,Zeuhl,United States | |
| LALU,Progressive Metal,France | |
| LAMAGAIA,Psychedelic/Space Rock,Sweden | |
| LAMANAĎF,Progressive Metal,Italy | |
| LAMBWOOL,Progressive Electronic,France | |
| BRUC AMONT,Prog Folk,United States | |
| LAMP OF THE UNIVERSE,Indo-Prog/Raga Rock,New Zealand | |
| LANA LEE,Psychedelic/Space Rock,Spain | |
| LAND OF CHOCOLATE,Jazz Rock/Fusion,United States | |
| LANDBERK,Heavy Prog,Sweden | |
| RAINE ANDFERMANN,Experimental/Post Metal,Germany | |
| LANDFORGE,Experimental/Post Metal,United Kingdom | |
| LANDING,Psychedelic/Space Rock,United States | |
| LANDMARQ,Neo-Prog,United Kingdom | |
| LANDS END,Psychedelic/Space Rock,United States | |
| LANDSCAPE,Crossover Prog,Poland | |
| LANDSCAPE,Heavy Prog,Netherlands | |
| LAN ANE,Prog Related,United States | |
| SHAW ANE,Jazz Rock/Fusion,United States | |
| LANFEAR,Progressive Metal,Germany | |
| YOG ANG,Crossover Prog,Germany | |
| JÉROM ANGLOIS,Prog Folk,Canada | |
| LANGSYNE,Indo-Prog/Raga Rock,Germany | |
| PASCA ANGUIRAND,Progressive Electronic,Canada | |
| LANTINOR,Crossover Prog,Russia | |
| LANTLOS,Experimental/Post Metal,Germany | |
| LANVALL,Symphonic Prog,Austria | |
| LAOZI,Progressive Electronic,Georgia | |
| LAPERA,Rock Progressivo Italiano,Italy | |
| LAPIS LAZULI,Jazz Rock/Fusion,United Kingdom | |
| LAPLACE,Eclectic Prog,Argentina | |
| EGO APPO,Progressive Metal,Russia | |
| LÁQUESIS,Symphonic Prog,Argentina | |
| PET ARAMEE,Progressive Metal,United States | |
| LARD FREE,Krautrock,France | |
| LARSEN,Post Rock/Math rock,Italy | |
| LARSEN RUPIN,RIO/Avant-Prog,Switzerland | |
| LALL ARSSON,Eclectic Prog,Sweden | |
| LIS ARUE,Crossover Prog,United States | |
| LARVAL,RIO/Avant-Prog,United States | |
| LASCAILLE'S SHROUD,Tech/Extreme Prog Metal,United States | |
| LASER,Rock Progressivo Italiano,Italy | |
| LASER PACE,Eclectic Prog,United States | |
| LASK,RIO/Avant-Prog,Germany | |
| TEDD ASRY,Progressive Electronic,France | |
| LAST CHANCE TO REASON,Tech/Extreme Prog Metal,United States | |
| LAST CRACK,Progressive Metal,United States | |
| LAST EXIT,RIO/Avant-Prog,United States | |
| LAST FLIGHT TO PLUTO,Crossover Prog,United Kingdom | |
| LAST KNIGHT,Crossover Prog,Multi-National | |
| LAST LAUGH,Heavy Prog,Sweden | |
| TH AST PLACID DAYS OF PLENTY,Neo-Prog,Canada | |
| LAST SCATTERING,Progressive Metal,Canada | |
| TH AST THINGS,Progressive Metal,United States | |
| LAST TURION,Crossover Prog,Germany | |
| TH AST VOID,Progressive Metal,Costa Rica | |
| LAST WARNING,Progressive Metal,Italy | |
| LASTING WEEP,Jazz Rock/Fusion,Canada | |
| LATITUDES,Experimental/Post Metal,United Kingdom | |
| LATTE E MIELE,Rock Progressivo Italiano,Italy | |
| LAUGHING STOCK,Neo-Prog,Norway | |
| SIMO AULUND,Progressive Metal,Denmark | |
| LAUNDRY,Heavy Prog,United States | |
| LAURA,Post Rock/Math rock,Australia | |
| LAURA,Crossover Prog,France | |
| LAURELIE,Prog Folk,Belgium | |
| LUCIAN AURINI,Rock Progressivo Italiano,Italy | |
| LAVA,Psychedelic/Space Rock,Sweden | |
| LAVA,Krautrock,Germany | |
| LAVA ENGINE,Progressive Metal,Sweden | |
| LAVIŔNTICA,Crossover Prog,Italy | |
| LAY LLAMAS,Psychedelic/Space Rock,Italy | |
| LAYRA,Crossover Prog,Italy | |
| LAZA I IPE,Symphonic Prog,Yugoslavia | |
| LAZARO,Progressive Metal,France | |
| TH AZARUS TRIO,Crossover Prog,United States | |
| TH AZE,Eclectic Prog,United Kingdom | |
| LAZER/WULF,Tech/Extreme Prog Metal,United States | |
| LAZERTÜTH,Psychedelic/Space Rock,United States | |
| LAZLEITT,Neo-Prog,United States | |
| LAZONA,Post Rock/Math rock,Italy | |
| LAZULI,Eclectic Prog,France | |
| LAZY DOLL,Crossover Prog,France | |
| LE MUR,Psychedelic/Space Rock,Germany | |
| LEAFBLADE,Prog Folk,United Kingdom | |
| LEAN LEFT,RIO/Avant-Prog,Multi-National | |
| LEAP DAY,Neo-Prog,Netherlands | |
| LEAVING TOMORROW,Crossover Prog,Greece | |
| LEB I SOL,Jazz Rock/Fusion,Yugoslavia | |
| LEBANON,Post Rock/Math rock,Israel | |
| GU EBLANC,Crossover Prog,Canada | |
| LEBOWSKI,Crossover Prog,Poland | |
| LED BIB,RIO/Avant-Prog,United Kingdom | |
| LED ZEPPELIN,Prog Related,United Kingdom | |
| JOSÉ LUIS FERNÁNDE EDESMA,RIO/Avant-Prog,Mexico | |
| GEDD EE,Prog Related,Canada | |
| LUCA EE,Heavy Prog,United States | |
| LEECH,Post Rock/Math rock,Switzerland | |
| LEECH,Heavy Prog,Estonia | |
| JOH EES,Crossover Prog,United Kingdom | |
| LEFT AS RAIN,Progressive Metal,United States | |
| LEFT BRAIN,Experimental/Post Metal,United States | |
| LEFTYFISH,RIO/Avant-Prog,Indonesia | |
| LEGACY,Symphonic Prog,United States | |
| LEGACY PILOTS,Symphonic Prog,Germany | |
| LEGEND,Neo-Prog,United Kingdom | |
| LEGEND,Heavy Prog,United States | |
| TH EGENDARY FLOWER PUNK,Psychedelic/Space Rock,Russia | |
| TH EGENDARY PINK DOTS,Psychedelic/Space Rock,United Kingdom | |
| LEGER DE MAIN,Progressive Metal,United States | |
| LEGGAT,Neo-Prog,Canada | |
| LEHMEJUM,Jazz Rock/Fusion,Brazil | |
| LEI SECA,Symphonic Prog,Brazil | |
| LEITMOTIV,Symphonic Prog,Canada | |
| STÉPHAN EMAIRE,Progressive Electronic,France | |
| LEMMUS LEMMUS,Psychedelic/Space Rock,Israel | |
| LEMONADE INFLUENCE,Psychedelic/Space Rock,Greece | |
| SELI EMOUCHI AND HIS ENEMIES,Psychedelic/Space Rock,Netherlands | |
| LEMUR VOICE,Progressive Metal,Netherlands | |
| LEMURYA,Eclectic Prog,France | |
| IGO EN,Progressive Electronic,Russia | |
| LENIN,Psychedelic/Space Rock,Argentina | |
| LENINGRAD BLUES MACHINE,Psychedelic/Space Rock,Japan | |
| TH ENS,Neo-Prog,United Kingdom | |
| LENTO,Experimental/Post Metal,Italy | |
| LEO NERO,Rock Progressivo Italiano,Italy | |
| JOHN D EO,RIO/Avant-Prog,Italy | |
| EONI,Rock Progressivo Italiano,Italy | |
| PERR EOPOLD,Prog Folk,United States | |
| LEPRECHAUN,Jazz Rock/Fusion,Chile | |
| FRANC EPRINO,Progressive Electronic,Italy | |
| LEPROUS,Tech/Extreme Prog Metal,Norway | |
| LEROUGE,Progressive Electronic,France | |
| BENIT ERTXUNDI,Prog Folk,Spain | |
| LES LEKIN,Psychedelic/Space Rock,Austria | |
| LES TONY MARTINI,Jazz Rock/Fusion,Canada | |
| LESBIAN,Experimental/Post Metal,United States | |
| NED LAGIN & PHI ESH,Progressive Electronic,United States | |
| LESOIR,Crossover Prog,Netherlands | |
| LEST,Heavy Prog,France | |
| LET AIRPLANES CIRCLE OVERHEAD,Post Rock/Math rock,United Kingdom | |
| LET SEE THIN,Neo-Prog,Poland | |
| CHRI ETCHFORD,Jazz Rock/Fusion,United States | |
| LETHAL,Progressive Metal,United States | |
| LETHE,Symphonic Prog,Netherlands | |
| LETHE,Rock Progressivo Italiano,Italy | |
| LETHEAN,Eclectic Prog,Italy | |
| CECI EUTER,Progressive Electronic,France | |
| LEVEL PI,Krautrock,Germany | |
| LEVI / WERSTLER,Tech/Extreme Prog Metal,United States | |
| LEVIATHAN,Progressive Metal,United States | |
| LEVIATHAN,Neo-Prog,Italy | |
| LEVIATHAN,Crossover Prog,United States | |
| LEVIN - MINNEMANN - RUDESS,Heavy Prog,United States | |
| BE EVIN GROUP,RIO/Avant-Prog,United States | |
| TON EVIN,Jazz Rock/Fusion,United States | |
| TH EVITATION HEX,Tech/Extreme Prog Metal,Australia | |
| MING EWIS,Jazz Rock/Fusion,United States | |
| LI TROUBAIRES DE COUMBOSCURO,Prog Folk,Italy | |
| LI'ED,Progressive Metal,Israel | |
| LIAM,Post Rock/Math rock,Germany | |
| LIBRA,Rock Progressivo Italiano,Italy | |
| LICE,Tech/Extreme Prog Metal,Spain | |
| LICHTPYRAMIDE,Krautrock,United Kingdom | |
| FRANCI ICKERISH,Symphonic Prog,United Kingdom | |
| LIED DES TEUFELS / EX HANUMAN,Krautrock,Germany | |
| LIFE,Crossover Prog,Sweden | |
| LIFE,Krautrock,Germany | |
| LIFE,Prog Related,United Kingdom | |
| LIFE LINE PROJECT,Symphonic Prog,Netherlands | |
| LIFE STAGE,Progressive Metal,United States | |
| LIFE TO THOSE SHADOWS,Progressive Metal,Brazil | |
| IFELONG JOURNEY,Crossover Prog,Italy | |
| LIFESIGNS,Neo-Prog,United Kingdom | |
| ALE IFESON,Prog Related,Canada | |
| LIFESTREAM,Crossover Prog,Italy | |
| LIFT,Crossover Prog,Germany | |
| LIFT,Symphonic Prog,United States | |
| LIGEIA MARE,RIO/Avant-Prog,United States | |
| LIGHT,Crossover Prog,Argentina | |
| LIGHT,Eclectic Prog,France | |
| LIGHT,Crossover Prog,Netherlands | |
| LIGHT,Neo-Prog,Netherlands | |
| TH IGHT AFTERNOON,Crossover Prog,United Kingdom | |
| LIGHT BEARER,Experimental/Post Metal,United Kingdom | |
| LIGHT COORPORATION,RIO/Avant-Prog,Poland | |
| LIGHT DAMAGE,Neo-Prog,Luxembourg | |
| TH IGHT IN THE OCEAN,Eclectic Prog,United States | |
| IGHT SLEEPER,RIO/Avant-Prog,United States | |
| LIGHTHOUSE,Jazz Rock/Fusion,Canada | |
| LIGHTHOUSE SPARROWS,Neo-Prog,Finland | |
| LIGHTS & MOTION,Post Rock/Math rock,Sweden | |
| LIGHTS AT SEA,Post Rock/Math rock,United States | |
| LIGHTS OUT ASIA,Post Rock/Math rock,United States | |
| LIGHTSHINE,Krautrock,Germany | |
| LIGHTWAVE,Progressive Electronic,France | |
| LIGRO,Jazz Rock/Fusion,Indonesia | |
| LIIR BU FER,Progressive Electronic,Italy | |
| LIKE BELLS,Post Rock/Math rock,United States | |
| LIKE NOMADS,Post Rock/Math rock,United States | |
| LIKE WENDY,Neo-Prog,Netherlands | |
| LILAC ORCHESTRA,Jazz Rock/Fusion,Russia | |
| LILIENTAL,Progressive Electronic,Germany | |
| LILY & MARIA,Prog Folk,United States | |
| ILY GRAY,Progressive Metal,United States | |
| ILY,Post Rock/Math rock,United Kingdom | |
| LIMBUS 3 & 4,Krautrock,Germany | |
| LIMITE ACQUE SICURE,Rock Progressivo Italiano,Italy | |
| LIMP,Post Rock/Math rock,Denmark | |
| LIMPID GREEN,Crossover Prog,United States | |
| LIND,Eclectic Prog,Germany | |
| LINDA MARTINI,Post Rock/Math rock,Portugal | |
| JONA INDBERG,Crossover Prog,Sweden | |
| OKSAN INDE,Progressive Electronic,Venezuela | |
| PÄ INDH AND BJÖRN JOHANSSON,Symphonic Prog,Sweden | |
| PÄ INDH PROJECT,Symphonic Prog,Sweden | |
| BJORN J:SO INDH,Eclectic Prog,Sweden | |
| LINDWURM,Jazz Rock/Fusion,Germany | |
| LINEAR SPHERE,Progressive Metal,United Kingdom | |
| LINEATEORICA,Rock Progressivo Italiano,Italy | |
| LING TOSITE SIGURE,Crossover Prog,Japan | |
| LINGUS,Crossover Prog,France | |
| LION SHEPHERD,Crossover Prog,Poland | |
| LIQUID GRAVEYARD,Tech/Extreme Prog Metal,Spain | |
| IQUID LANDSCAPE,Crossover Prog,Netherlands | |
| LIQUID ORBIT,Psychedelic/Space Rock,Germany | |
| LIQUID SCARLET,Heavy Prog,Sweden | |
| LIQUID SOUND COMPANY,Psychedelic/Space Rock,United States | |
| LIQUID TENSION EXPERIMENT,Progressive Metal,United States | |
| LIQUID VISIONS,Psychedelic/Space Rock,Germany | |
| LIQUID WOLF,Heavy Prog,Finland | |
| LIQUIDO DI MORTE,Psychedelic/Space Rock,Italy | |
| LIQUORWORKS,Progressive Metal,Finland | |
| LIRD VAN GOLES,Crossover Prog,Switzerland | |
| LISA O PIU,Prog Folk,Sweden | |
| JOSIP ISAC,Prog Related,Yugoslavia | |
| LISERSTILLE / EX LIS ER STILLE,Post Rock/Math rock,Denmark | |
| LISKER,Prog Folk,Spain | |
| LISTING SHIPS,Krautrock,United Kingdom | |
| LITAI,RIO/Avant-Prog,Italy | |
| LITE,Post Rock/Math rock,Japan | |
| LITHIUM DAWN,Experimental/Post Metal,United States | |
| LITMUS,Psychedelic/Space Rock,United Kingdom | |
| LITTLE ATLAS,Neo-Prog,United States | |
| LITTLE TRAGEDIES,Symphonic Prog,Russia | |
| LITTLE TYBEE,Crossover Prog,United States | |
| LITTLE WOMEN,RIO/Avant-Prog,United States | |
| LITURGY,Experimental/Post Metal,United States | |
| LIVE,Symphonic Prog,Germany | |
| JOH IVENGOOD,Progressive Electronic,France | |
| LIVES AND TIMES,Crossover Prog,United Kingdom | |
| KERR IVGREN,Crossover Prog,United States | |
| LIVING LIFE,Jazz Rock/Fusion,Italy | |
| LIVING STILTS,Crossover Prog,Italy | |
| LIVING TALES,Progressive Metal,Portugal | |
| TH IVING,Crossover Prog,Canada | |
| LIVIT,Progressive Metal,Germany | |
| LIZARD,Eclectic Prog,Poland | |
| LIZARD PROFESSOR,Tech/Extreme Prog Metal,United States | |
| LIZARDS EXIST,Psychedelic/Space Rock,Croatia | |
| LLC,Post Rock/Math rock,United States | |
| LLORAH,Experimental/Post Metal,France | |
| CAILY LOYD,Symphonic Prog,United States | |
| LO' THERE DO I SEE MY BROTHER,Post Rock/Math rock,United States | |
| TH OAD,Symphonic Prog,United States | |
| LOBATE SCARP,Crossover Prog,United States | |
| LÖBO,Experimental/Post Metal,Portugal | |
| LOBSTER NEWBERG,Eclectic Prog,United States | |
| LOCAL 7,Progressive Metal,France | |
| TH OCALS,RIO/Avant-Prog,Germany | |
| LOCANDA DELLE FATE,Rock Progressivo Italiano,Italy | |
| LOCH NESS,Symphonic Prog,Brazil | |
| LOCH NESS,Psychedelic/Space Rock,Mexico | |
| LOCH VOSTOK,Progressive Metal,Sweden | |
| DIDIE OCKWOOD,Jazz Rock/Fusion,France | |
| LOCOMOTIV GT,Eclectic Prog,Hungary | |
| LOCRIAN,Experimental/Post Metal,United States | |
| EMILI OCURCIO,Rock Progressivo Italiano,Italy | |
| LOCUS AMOENUS,Rock Progressivo Italiano,Italy | |
| LOCUST LEAVES,Experimental/Post Metal,Greece | |
| TH OCUST,Tech/Extreme Prog Metal,United States | |
| LODESTAR DYNASTY,Progressive Metal,United States | |
| TH ODGE,Canterbury Scene,United States | |
| LOGAN DWIGHT,Crossover Prog,Italy | |
| LOGIC GATE,Progressive Electronic,United States | |
| LOGIC MESS / EX CRYSTAL LAKE,Progressive Metal,Poland | |
| LOGOS,Rock Progressivo Italiano,Italy | |
| LOINCLOTH,Tech/Extreme Prog Metal,United States | |
| LOKOMOTIVE KREUZBERG,Krautrock,Germany | |
| LONDON ODENSE ENSEMBLE,Psychedelic/Space Rock,Multi-National | |
| LONDON UNDERGROUND,Psychedelic/Space Rock,Italy | |
| LONE STAR,Heavy Prog,United Kingdom | |
| TH ONELY BEARS,Jazz Rock/Fusion,Multi-National | |
| ONELY CROWD,Heavy Prog,Australia | |
| LONELY ROBOT,Crossover Prog,United Kingdom | |
| LONG DISTANCE CALLING,Post Rock/Math rock,Germany | |
| LONG DISTANCE POISON,Progressive Electronic,United States | |
| LONG EARTH,Crossover Prog,United Kingdom | |
| TH ONG HELLO,Eclectic Prog,United Kingdom | |
| LONG LIVE DEATH,Prog Folk,United States | |
| TH ONGEST DAY,Psychedelic/Space Rock,Australia | |
| LONGSHOT,Neo-Prog,France | |
| LOOK DE BOUK ,RIO/Avant-Prog,France | |
| LOOK TO WINDWARD,Experimental/Post Metal,New Zealand | |
| LOOKING-GLASS LANTERN,Neo-Prog,United Kingdom | |
| LOOM,Progressive Electronic,Germany | |
| LOOMINGS,RIO/Avant-Prog,France | |
| LOONYPARK,Crossover Prog,Poland | |
| LOOP,Psychedelic/Space Rock,United Kingdom | |
| LOOSE LIPS SINK SHIPS,Post Rock/Math rock,United States | |
| LOOSENSE,Jazz Rock/Fusion,Portugal | |
| LÖR,Progressive Metal,United States | |
| LORAINE,Post Rock/Math rock,United States | |
| LORD BANE,Progressive Metal,United States | |
| LORD FLIMNAP,Symphonic Prog,Israel | |
| LORD HELMET,Heavy Prog,United States | |
| LORD OF MUSHROOMS,Progressive Metal,France | |
| LORD ONLY,Heavy Prog,United States | |
| JO ORD,Prog Related,United Kingdom | |
| LORDFISH,Psychedelic/Space Rock,Costa Rica | |
| LORDS OF FORM,Psychedelic/Space Rock,United Kingdom | |
| LORDSPHERE,Progressive Metal,Spain | |
| BERTRAN OREAU,Progressive Electronic,France | |
| RÜDIGE ORENZ,Progressive Electronic,Germany | |
| LOREWEAVER,Progressive Metal,Italy | |
| LORIEN,Neo-Prog,United Kingdom | |
| LORQ DAMON,Progressive Electronic,United States | |
| LORUS,Experimental/Post Metal,United States | |
| LOS BARROCOS,Eclectic Prog,Argentina | |
| LOSS OF A CHILD,Post Rock/Math rock,United Kingdom | |
| LOST APPARITIONS,Heavy Prog,United States | |
| LOST CROWNS,RIO/Avant-Prog,United Kingdom | |
| LOST FOREVER,Progressive Metal,Brazil | |
| LOST IN THE RIOTS,Post Rock/Math rock,United Kingdom | |
| LOST IN THOUGHT,Progressive Metal,United Kingdom | |
| LOST INSEN,Progressive Metal,Tunisia | |
| LOST KITE,Eclectic Prog,Sweden | |
| LOST NATION,Heavy Prog,United States | |
| LOST PEACE,Jazz Rock/Fusion,Switzerland | |
| LOST REVERIE,Post Rock/Math rock,Mexico | |
| OST STATE OF MIND,Experimental/Post Metal,United States | |
| LOST SYMPHONY,Progressive Metal,United States | |
| LOST TALES,Rock Progressivo Italiano,Italy | |
| TH OST VISION OF THE CHANDOO PRIEST,Eclectic Prog,Italy | |
| LOST WORLD BAND,Crossover Prog,Russia | |
| LOT LORIEN,Prog Folk,Bulgaria | |
| LOTHLORIEN,Rock Progressivo Italiano,Italy | |
| LOTTO,Post Rock/Math rock,Poland | |
| LOTUS,Jazz Rock/Fusion,Sweden | |
| LOTUS AUREA,Crossover Prog,Brazil | |
| LOTUS THIEF,Experimental/Post Metal,United States | |
| LOUDEST WHISPER,Prog Folk,Ireland | |
| RENAU OUIS GROUP,Jazz Rock/Fusion,France | |
| CLAR OUISE,Prog Folk,France | |
| KIK OUREIRO,Progressive Metal,Brazil | |
| JEAN-PIERR OUVETON,Crossover Prog,France | |
| LOVE DE VICE,Crossover Prog,Poland | |
| LOVE FAGERSTEDT,Heavy Prog,Sweden | |
| LOVE HISTORY,Tech/Extreme Prog Metal,Czech Republic | |
| LOVE LIVE LIFE + ONE,Psychedelic/Space Rock,Japan | |
| LOVE MACHINE,Psychedelic/Space Rock,Germany | |
| LOVELY GIRLS ARE BLIND,Post Rock/Math rock,France | |
| LOVELY LITTLE GIRLS,RIO/Avant-Prog,United States | |
| LOVELY SOCIALITE,Jazz Rock/Fusion,United States | |
| LOW BUDGET ORCHESTRA,Neo-Prog,Finland | |
| LOWERCASE NOISES,Post Rock/Math rock,United States | |
| LSA,Prog Folk,Poland | |
| LUARVIK LUARVIK,Eclectic Prog,Estonia | |
| LUBIANKA,Psychedelic/Space Rock,Spain | |
| ARJEN ANTHON UCASSEN,Crossover Prog,Netherlands | |
| LUCCI MARSOLA TATINI AND BURANI,Prog Folk,Brazil | |
| LUCID PLANET,Experimental/Post Metal,Australia | |
| LUCIFER WAS,Eclectic Prog,Norway | |
| LUCIFER'S FRIEND,Heavy Prog,Germany | |
| TH UCK OF EDEN HALL,Crossover Prog,United States | |
| LUCY,Eclectic Prog,Brazil | |
| LUCY IN BLUE,Crossover Prog,Iceland | |
| LUCYNINE,Experimental/Post Metal,Italy | |
| LUDICRA,Experimental/Post Metal,United States | |
| LUDUS,Crossover Prog,United Kingdom | |
| LUFEH,Heavy Prog,United States | |
| LÜGER,Psychedelic/Space Rock,Spain | |
| LUGNORO,Heavy Prog,Sweden | |
| JOHANNE ULEY,Crossover Prog,United States | |
| LULL,Progressive Electronic,United Kingdom | |
| LUMEN,Post Rock/Math rock,United States | |
| LUMERIANS,Psychedelic/Space Rock,United States | |
| LUMINA,Jazz Rock/Fusion,Brazil | |
| LUMINOUS FLESH GIANTS,Progressive Metal,Poland | |
| LUMINOUS NEWTS,Crossover Prog,United States | |
| LUMINOUS VAULT,Experimental/Post Metal,United States | |
| LUMSK,Prog Folk,Norway | |
| TH UNA MOTH,Post Rock/Math rock,United States | |
| LUNA ROSSA,Crossover Prog,United Kingdom | |
| LUNAPARK ENSEMBLE,RIO/Avant-Prog,Japan | |
| LUNAR,Post Rock/Math rock,Croatia | |
| LUNAR,Progressive Metal,United States | |
| LUNAR CAPE,Jazz Rock/Fusion,Russia | |
| LUNAR CHAMBER,Tech/Extreme Prog Metal,United States | |
| LUNAR CHATEAU,Neo-Prog,United States | |
| LUNAR CLOCK,Symphonic Prog,Netherlands | |
| LUNAR DUNES,Psychedelic/Space Rock,United Kingdom | |
| LUNAR GRAVE,Krautrock,United States | |
| LUNAR MIASMA,Progressive Electronic,Greece | |
| LUNATIC SOUL,Crossover Prog,Poland | |
| TO UNDVALL,Progressive Electronic,United States | |
| LUSTMORD,Progressive Electronic,United Kingdom | |
| PHILIPP UTTUN,Crossover Prog,France | |
| LÜÜP,Crossover Prog,Greece | |
| LUX AETERNA,Progressive Metal,France | |
| LUX OCCULTA,Tech/Extreme Prog Metal,Poland | |
| LUX TERMINUS,Eclectic Prog,United States | |
| LUZ DE RIADA,RIO/Avant-Prog,Mexico | |
| LUZPARÍS,Post Rock/Math rock,Argentina | |
| WILLIA YALL,Crossover Prog,United Kingdom | |
| LYCHGATE,Tech/Extreme Prog Metal,United Kingdom | |
| LYDHODE,Progressive Electronic,Norway | |
| LYDIAN SEA,Progressive Metal,United States | |
| LYE BY MISTAKE,Experimental/Post Metal,United States | |
| LYKATHEA AFLAME,Tech/Extreme Prog Metal,Czech Republic | |
| LYMBYC SYSTYM,Post Rock/Math rock,United States | |
| BJŘR YNNE,Progressive Electronic,Norway | |
| LYNX,Post Rock/Math rock,United States | |
| LYRANTHE,Progressive Metal,United States | |
| LYRIAN,Crossover Prog,United Kingdom | |