| Aleksandr Alenitsyn | |
| Birth Date: | 29 November 1884 |
| Birth Place: | St. Petersburg, Russian Empire |
| Death Place: | Moscow, Soviet Union |
Aleksandr Appolonovich Alenitsyn (29 November 1884 - 5 October 1922) was a Russian tennis player. He competed in the men's outdoor doubles event at the 1912 Summer Olympics.[1] He committed suicide in prison in 1922 after being arrested and tortured by Soviet authorities for "having contacts with other countries".[2]