Ján is a Slovak form of the name John.
Ján Bahýľ, inventor
Ján Čapkovič, football player
Ján Čarnogurský, former Prime Minister of Slovakia, comunist
Ján Cikker, composer
Ján Ďurica, football player
Ján Figeľ, European Commissioner
Ján Golian, soldier, military leader of Slovak National Uprising
Ján Hollý, poet and translator
Ján Kadár, film director
Ján Kocian, football player
Ján Kollár, writer
Ján Kožiak, football player
Ján Lašák, ice-hockey goalkeeper
Ján Mucha, Slovak footballer
Ján Packa, handball player
Ján Slota, politician, alcoholic
Ján Šťastný, Slovak hockey player
Ján Svorada, cyclist
Ján Zvara, high jumper
Liptovský Ján, village and municipality in Slovakia
Ján Wikipedia (Text) CC BY-SA