Namesakes
János I Zápolya
(m) 1487-1540 
Hungarian Kings and Queens 1526-1540
János II Zsigmond Zápolya
(m) 1540-1571
Hungarian Kings and Queens 1540-1571
János Hadik
(m) 1863-1933
Hungarian Presidents and Prime Ministers 1918 (prime minister)
Nándor Dáni
(a.k.a. János) (m) 1871-1949
Olympic Medalists 1896 800 m (silver)
Pál Teleki
(a.k.a. János) (m) 1879-1941
Hungarian Presidents and Prime Ministers 1920-1921; 1939-1941 (prime minister)
Károly Huszár
(a.k.a. János) (m) 1882-1941
Hungarian Presidents and Prime Ministers 1919-1920 (prime minister)
John von Neumann
(a.k.a. János) (m) 1903-1957
Notable Philosophers and Thinkers
János Németh
(m) 1906-1988
Olympic Medalists 1932; 1936 water polo (gold)
János Kádár
(m) 1912-1989
Hungarian Presidents and Prime Ministers 1956-1958; 1961-1965 (prime minister)
Gyula Horn
(a.k.a. János) (m) 1932-2013
Hungarian Presidents and Prime Ministers 1994-1998 (prime minister)
János Konrád
(m) 1941-2014
Olympic Medalists 1964; 1968 water polo (gold/bronze)
János Steinmetz
(m) 1947-2007
Olympic Medalists 1968 water polo (bronze)
János Áder
(m) 1959-
Hungarian Presidents and Prime Ministers 2012-2022 (president)