Johannes von Leysen (1310–1388), town founder and mayor
Nicolaus Copernicus (1473–1543), astronomer, administrator, and town commander
Johannes Knolleisen (+1511), German academic and provider of academic stipends
Lucas David (1503–1583), German historian of Prussia
Marcin Kromer (1512–1589), Polish cartographer, diplomat and historian, personal secretary of Kings of Poland, Bishop of Warmia
Antoni Blank (1785–1844), Polish painter
Hugo Haase (1863–1919), Jewish-German politician, jurist and pacifist
Franz Justus Rarkowski (1873–1950), military bishop (1938–45)
August Trunz (1875–1963), founder of the Prussica-Sammlung Trunz
Feliks Nowowiejski (1877–1946), Polish composer, conductor, concert organist
Maximilian Kaller (1880–1947) German prelate, bishop of Ermland in 1930–45
Erich Mendelsohn (1887–1953), German-Jewish architect who fled the Nazis
Olga Desmond (1891–1964), German dancer and actress
Günter Wand (1912–2002), German conductor
Kurt Baluses (1914–72) German football (soccer) player and manager
Herbert Schachtschneider (1919–2008), German operatic tenor
Hans-Jürgen Wischnewski (1922–2005), German politician
Curt Lowens (1925–2017), German actor
Leonhard Pohl (1929–2014), German gymnast
Józef Glemp (1929–2013), Polish prelate, bishop of Warmia 1979–81
Jörg Kuebart (1934–2018) German general of the German Air Force
Karl-Heinz Hopp (1936–2007) German rower who competed in the 1960 Summer Olympics
Wolf Lepenies (born 1941), German sociologist, political scientist and author
Eugeniusz Geno Malkowski (1942–2016), Polish artist, painter and academic
Ulrich Schrade (1943–2009), German-Polish philosopher and pedagogue
Marian Bublewicz (1950–1993), Polish rally and race driver of the 80s and 90s
Juliusz Machulski (born 1955), Polish film director
Izabela Trojanowska (born 1955), Polish actress and singer
Andrzej Friszke (born 1956), Polish historian
Krzysztof Hołowczyc (born 1962), Polish rally driver
Piotr "Peter" Wiwczarek (born 1965), Polish musician, vocalist and lead guitarist of the death metal band Vader
Mamed Khalidov (born 1980), Russian-Polish mixed martial artist
Wojciech Grzyb (born 1981), Polish volleyball player
Julia Marcell (born 1982), Polish singer/songwriter and pianist
Małgorzata Jasińska (born 1984), Polish professional cyclist (retd.)

Adrian Mierzejewski (born 1986), Polish footballer
Joanna Jędrzejczyk (born 1987), Muay-Thai and MMA fighter, former UFC Women's Strawweight Champion
Artur Szalpuk (born 1995), Polish volleyball player, 2018 World Champion
Johannes von Leysen (1310–1388), town founder and mayor
Nicolaus Copernicus (1473–1543), astronomer, administrator, and town commander
Johannes Knolleisen (+1511), German academic and provider of academic stipends
Lucas David (1503–1583), German historian of Prussia
Marcin Kromer (1512–1589), Polish cartographer, diplomat and historian, personal secretary of Kings of Poland, Bishop of Warmia
Antoni Blank (1785–1844), Polish painter
Hugo Haase (1863–1919), Jewish-German politician, jurist and pacifist
Franz Justus Rarkowski (1873–1950), military bishop (1938–45)
August Trunz (1875–1963), founder of the Prussica-Sammlung Trunz
Feliks Nowowiejski (1877–1946), Polish composer, conductor, concert organist
Maximilian Kaller (1880–1947) German prelate, bishop of Ermland in 1930–45
Erich Mendelsohn (1887–1953), German-Jewish architect who fled the Nazis
Olga Desmond (1891–1964), German dancer and actress
Günter Wand (1912–2002), German conductor
Kurt Baluses (1914–72) German football (soccer) player and manager
Herbert Schachtschneider (1919–2008), German operatic tenor
Hans-Jürgen Wischnewski (1922–2005), German politician
Curt Lowens (1925–2017), German actor
Leonhard Pohl (1929–2014), German gymnast
Józef Glemp (1929–2013), Polish prelate, bishop of Warmia 1979–81
Jörg Kuebart (1934–2018) German general of the German Air Force
Karl-Heinz Hopp (1936–2007) German rower who competed in the 1960 Summer Olympics
Wolf Lepenies (born 1941), German sociologist, political scientist and author
Eugeniusz Geno Malkowski (1942–2016), Polish artist, painter and academic
Ulrich Schrade (1943–2009), German-Polish philosopher and pedagogue
Marian Bublewicz (1950–1993), Polish rally and race driver of the 80s and 90s
Juliusz Machulski (born 1955), Polish film director
Izabela Trojanowska (born 1955), Polish actress and singer
Andrzej Friszke (born 1956), Polish historian
Krzysztof Hołowczyc (born 1962), Polish rally driver
Piotr "Peter" Wiwczarek (born 1965), Polish musician, vocalist and lead guitarist of the death metal band Vader
Mamed Khalidov (born 1980), Russian-Polish mixed martial artist
Wojciech Grzyb (born 1981), Polish volleyball player
Julia Marcell (born 1982), Polish singer/songwriter and pianist
Małgorzata Jasińska (born 1984), Polish professional cyclist (retd.)
Adrian Mierzejewski (born 1986), Polish footballer
Joanna Jędrzejczyk (born 1987), Muay-Thai and MMA fighter, former UFC Women's Strawweight Champion
Artur Szalpuk (born 1995), Polish volleyball player, 2018 World Champion
Olsztyn