Janssen (surname)
Appearance
Janssen is a surname. Notable people with the surname include:
- Saint Arnold Janssen (1837–1909), German founder of the Society of the Divine Word
- Benno Janssen (1874–1964), American architect
- Benny Janssen Dutch sidecarcross rider
- Brian Janssen (born 1962), Australian boxer of the 1980s
- Casey Janssen (born 1981), American baseball player for the Washington Nationals
- Constant Janssen (1895–1970), Belgian founder of predecessor of Janssen Pharmaceutica
- David Janssen (1931–1980), American film and television actor
- Famke Janssen (born 1965), Dutch actress
- Horst Janssen (1929–1995), German printmaker
- Jan Janssen (born 1940), Dutch professional cyclist
- Johannes Janssen (1829–1891), German historian
- Marco A. Janssen (born 1969), Dutch econometrist
- Paul Janssen (1926–2003), Belgian founder of Janssen Pharmaceutica
- Pierre Jules César Janssen (1824–1907), French astronomer
- René Janssen (born 1959), Dutch nanotechnologist
- Rik Janssen (born 1957), Dutch politician
- Ronald Janssen (born 1971), Belgian serial killer
- Ruud Janssen (born 1959), Dutch Fluxus and mail artist
- Tiny Janssen Dutch sidecarcross rider
- Vincent Janssen (born 1994), Dutch professional footballer
- Zacharias Janssen (1580–1638), Dutch spectacle-maker; invented a compound microscope