Sergei Popov
Sergei Popov may refer to:
- Sergei Igorevich Popov (b. 1987), Russian footballer
- Sergei Popov (Estonian footballer) (b. 1982), Estonian footballer
- Sergei Popov (athlete) (b. 1930), Soviet marathon runner
- Sergei Sergeyevich Popov (b. 1946), Russian actor
- Sergei Viktorovich Popov (b. 1971), Russian businessman and billionaire
- Serhiy Popov (b. 1971), Ukrainian footballer
- Serhiy Popov (basketball), Ukrainian basketball player
- Sergei Popov (rugby union), Russian rugby union player. Played at the 2011 Rugby World Cup.
- Serhiy Popov (gymnast), Ukrainian acrobatic gymnast
- Sergei Popov (bioweaponeer), one of the Soviet Union's top bio-weapons scientists; defector to USA