Alexei or Alexey Ivanov (Russian: Алексей Иванов, Belarusian: Аляксей Іваноў)) may refer to:
- Aleksei Mikhailovich Ivanov (b. 1989), Russian footballer
- Aleksei Vladimirovich Ivanov (b. 1981), Russian footballer with FC Saturn Moscow Oblast
- Aleksei Yevgenyevich Ivanov (b. 1980), Russian footballer
- Alexei Ivanov (goaltender) (b. 1988), Russian ice hockey goaltender
- Alexei Ivanov (ice hockey b. 1985), Russian ice hockey player drafted by the NHL Chicago Blackhawks
- Alexei Viktorovich Ivanov (b. 1969), Russian writer
- Alexey Andreyevich Ivanov (b. 1983), Russian footballer with FC Sever Murmansk
- Alexey Ivanov (athlete), Russian paralympic track and field athlete
- Aliaksei Ivanou, Belarusian skier
- Aleksei Ivanovich Ivanov, Russian Sinologist and Tangutologist