- Andreas Petropoulos, Greek professional basketball player
- Antonis Petropoulos, Greek professional footballer
- Elias Petropoulos, Greek author, folklorist and urban historian
- Jonathan Petropoulos (born 1961), American historian
- Georgios Petropoulos, former name of Peter G. Peterson (1926 – 2018), American investment banker
- Georgios Petropoulos (1872 – 1937), Greek fencer and shooter
- Kostas Petropoulos, Greek former professional basketball coach, and a retired professional basketball player
- Lakis Petropoulos, former Greek football player and manager
- Renée Petropoulos, contemporary artist