Blanche (given name)
Blanche is a feminine given name. It means "white" in French, derived from the Late Latin word "blancus".

People

French royalty
Blanche of Castile (1188–1252), Queen of France, granddaughter of Blanca of Navarre (daughter of Garcia VI)
Blanche of Navarre, Queen of France (Blanche d'Évreux, 1330–1398)
Blanche of France, Infanta of Castile (1253–1323), daughter of King Louis IX of France, wife of Fernando, the eldest son of Alfonso X of Castile
Blanche of France, Duchess of Austria (c. 1278–1305), daughter of King Philip II of France, wife of Rudolf I of Bohemia
Blanche of France (nun) (1313–1358), daughter of King Philip V of France
Blanche of France, Duchess of Orléans (1328–1382), posthumous daughter of King Charles IV of France, Duchess consort of Orleans
Blanche of Burgundy, Queen of France

Navarrese royalty
Blanche of Navarre, Queen of Castile (after 1133 – 1156), daughter of García Ramírez of Navarre, wife of King Sancho III of Castile
Blanche of Navarre, Countess of Champagne (died 1229), Countess of Champagne and regent of Navarre
Blanche of Artois (1248–1302), queen consort and regent of Navarre
Blanche of Navarre, Duchess of Brittany (1226–1283), also known as Blanche of Champagne, wife of duke John I of Brittany
Blanche I of Navarre (1385–1441), queen regnant of Navarre, wife of John II of Navarre
Blanche II of Navarre (1424–1464), daughter of Blanche I of Navarre; pretender of Navarre, divorced Queen of Castile

Other nobility
Blanche of Namur (1320–1363), queen-consort of Norway and Sweden
Duchess Blanche of England (1392–1409), also known as Blanche of Lancaster, daughter of King Henry IV
Blanche of Brittany (1271–1327), mother of Robert III of Artois
Blanche of Sicily, wife of Robert III of Flanders
Blanche of Anjou (1280–1310), wife of James II of Aragon
Lady Blanche Arundell (1583 or c. 1584–1649), wife of Thomas Arundell, 2nd Baron Arundell of Wardour
Blanche de Brienne, Baroness Tingry (c. 1252–c. 1302)
Blanche del Carretto (1432–1458), Lady Consort of Monaco
Lady Blanche, daughter of Charles Noel, 2nd Earl of Gainsborough
Blanche of Valois (1316–1348), wife of Charles IV, Holy Roman Emperor

Other people
Blanche (singer), stage name of Belgian singer and songwriter Ellie Delvaux
Blanche d'Alpuget, Australian novelist and biographer, second wife of former Australian Prime Minister Bob Hawke
Blanche Hermine Barbot (1842 - 1919), Belgian-American musical director and pianist
Blanche Baker, actress
Blanche Bates, actress
Blanche Bingley (1863–1946), English tennis player
Blanche Bruce (1841–1898), first African-American to serve a full term in the United States Senate
Blanche Calloway, 1930s African-American jazz singer
Blanche Wiesen Cook (born 1941), American professor of history and author
Blanche Deschamps-Jéhin (1857–1923), French operatic contralto
Blanche Dugdale (1880–1948), British author and Zionist
Blanche Friderici (1878—1933), American film and stage actress
Blanche Jenkins (active 1872–1915), British portrait painter
Blanche Lazzell, modernist painter and printmaker
Blanche Douglass Leathers, first female steamboat captain
Blanche Lincoln (born 1960), former U.S. Senator from Arkansas
Blanche Martin (born 1937), American Football League player in 1960
Blanche McManus (1869–1935), American writer and artist
Blanche Hoschedé Monet (1865–1947), French painter, both stepdaughter and daughter-in law of Claude Monet
Blanche Oelrichs, actress and poet
Blanche Ravalec, actress
Blanche Roddick, mother of tennis player Andy Roddick
Blanche Scott (1885–1970), possibly the first American woman aviator
Blanche Sweet (1896–1986), American early silent film actress
Blanche Thebom, operatic soprano
Blanche Walsh, actress

Fictional characters
Blanche Devereaux, in the television series The Golden Girls and The Golden Palace
Blanche DuBois, in the play A Streetcar Named Desire and its adaptations
the title character of the 1948 British film Blanche Fury, played by Valerie Hobson
Blanche Hunt, in the British soap opera Coronation Street
 Blanche Ingram, from the novel Jane Eyre
Madamoiselle Blanche De Cominges, from Dostoyevsky's novel The Gambler
Blanche White, in the board game Cluedo (Clue in US)
Blanca Trueba, in Isabel Allende's novel The House of the Spirits
Blanche Buck, in the 1967 film Bonnie and Clyde
Blanche, a white cat in 1977 Japanese surrealistic horror film Hausu
Blanche, Kaede Saitou's angel in the anime and manga series Angelic Layer
Blanche Norton, from the 1950s comedy show, The George Burns and Gracie Allen Show. Bea Benaderet played the character.
Blanche, Team Mystic's leader from 2016 mobile game Pokémon Go.