Jan Arnošt Smoler 💼 Linguist, writer, publisher Jan Asselijn 💼 Painter, draftsperson Jan Assmann 💼 Egyptologist, archaeologist, university teacher Jan Baptist van Helmont 💼 Chemist, physicist, physician writer, philosopher, physiologist, physician, scientist, writer, alchemist Jan Baudouin de Courtenay 💼 Linguist, professor, esperantologist, philologist, slavist, phonetician Jan Bednarek 💼 Association football player Jan Betker 💼 Curler Jan Blokhuijsen 💼 Speed skater Jan Bos 💼 Speed skater, track cyclist, sport cyclist Jan Brewer 💼 Politician Jan Brueghel the Elder 💼 Painter, artist, graphic artist, architectural draftsperson, visual artist Jan Brueghel the Younger 💼 Painter Jan Ceulemans 💼 Association football player, association football coach Jan Czerski 💼 Explorer, paleontologist, geographer, entomologist, geologist Jan Czochralski 💼 Inventor, university teacher, chemist, metallurgist, engineer Jan Davidsz. de Heem 💼 Painter, botanical illustrator Jan Davis 💼 Astronaut, engineer, biologist Jan Decleir 💼 Actor, film actor, performing artist, theatrical director, television actor Jan Dismas Zelenka 💼 Composer, conductor, double-bassist Jan Długosz 💼 Diplomat, military personnel, historian, catholic priest, geographer, heraldist, catholic bishop Jan Eliasson 💼 Diplomat, politician Jan Evangelista Purkyně 💼 Physician, neurologist, physiologist, anatomist, university teacher, biologist, poet, philosopher, translator, writer, naturalist, politician, botanist Jan Frodeno 💼 Triathlete Jan Fyt 💼 Painter Jan Garbarek 💼 Composer, jazz musician, saxophonist, recording artist Jan Gehl 💼 Architect, urban planner Jan Gossaert 💼 Painter Jan Gotlib Bloch 💼 Diplomat, entrepreneur, banker, economist, writer, financier Jan Grabowski 💼 Historian of modern age, university teacher, historian Jan Guillou 💼 Writer, journalist, autobiographer, screenwriter, businessperson Jan Hammer 💼 Pianist, composer, songwriter, record producer, film producer, film score composer, jazz musician, recording artist Jan Harlan 💼 Film director, film producer Jan Harold Brunvand 💼 Anthropologist, sociologist Jan Heintze 💼 Association football player Jan Henne 💼 Swimmer Jan Henryk Dąbrowski 💼 Military officer Jan Hernych 💼 Tennis player Jan Hooks 💼 Actor, television actor, voice actor, film actor Jan Hudec 💼 Alpine skier Jan Hus 💼 Translator, theologian, university teacher, writer, philosopher, pastor, linguist, teacher, preacher, presbyter, bohemicist, christian reformer Jan Ingenhousz 💼 Botanist, physician, physicist, physiologist, chemist, biologist Jan Janssen 💼 Sport cyclist, track cyclist Jan Johnson 💼 Pole vaulter Jan Jongbloed 💼 Association football player, association football coach Jan Jönsson 💼 Association football player, association football coach Jan Karol Chodkiewicz 💼 Diplomat, statesperson, military personnel Jan Karski 💼 Jurist, writer, teacher Jan Kasprowicz 💼 Poet, translator, writer, playwright, professor, literary historian Jan Kiepura 💼 Opera singer, singer, stage actor, film actor, actor Jan Kiesser 💼 Cinematographer Jan Kirchhoff 💼 Association football player Jan Kjærstad 💼 Writer, theologian, novelist, short story writer Jan Kochanowski 💼 Poet, writer, translator, playwright Jan Kodeš 💼 Tennis player, tennis coach Jan Koller 💼 Association football player, beach soccer player Jan Kott 💼 Literary historian, writer, theatre critic, translator, literary critic, journalist, poet Jan Koum 💼 Engineer, computer scientist, programmer Jan Kromkamp 💼 Association football player, association football coach Jan Krzysztof Bielecki 💼 Economist, politician, banker Jan Kubelík 💼 Composer, violinist, collector