Jan Novak may refer to:
- Jan Novak (basketball) (born 1992), German professional basketball player with Frankfurt Skyliners
- Jan Novák (composer) (1921–1984), Czech composer of classical music
- Jan Novak (director), Czech director and producer of gay pornographic films
- Jan Novák (ice hockey) (born 1979), Czech professional ice hockey player
- Ján Novák (footballer) (born 1985), Slovak association football striker
- Jan Nowak-Jeziorański (1914–2005), Polish writer and activist