Felix (Feliks) Emil Kellosalmi (3 June 1877, Messukylä - 28 March 1939; surname until 1908 Pettersson; name as Soviet citizen Феликс Петрович Келлосальми) was a Finnish typesetter and politician.
He sided with the Reds during the Finnish Civil War and after the defeat of the Red side he went into exile in Soviet Russia.
He joined the Communist Party of the Soviet Union and settled in the Karelian ASSR, where he worked as a journalist, as a teacher, as a translator and in other functions.
He was set free on 5 February 1936 because of his weakened state of health.
The charges against him were dropped, but he was not reinstated as a party member.