Bonk is a surname. Notable people with the surname include:
- Gerd Bonk (1951–2014), German weightlifter
- James Bonk (1931–2013), American chemist and academic
- John Bonk (born 1950), 2008 inductee into the Canadian Football Hall of Fame
- Julia Bonk (born 1986), German politician
- Keiko Bonk (born 1954), Hawaiian activist, artist, musician and politician
- Radek Bonk (born 1976), professional ice hockey player
- Tino Bonk (born 1967), German bobsledder