Keena is both a given name and surname. Notable people with the name include:
Given name Keena Rothhammer (born 1957), American Olympic swimmer Keena Turner (born 1958), American football player Keena Young (born 1985), American basketball player
Surname
Aidan Keena (born 1999), Irish football player Leo J. Keena (1878–1967), American football player and diplomat Monica Keena (born 1979), American actress and model Mateo Banks y Keena (1872–1949), Argentine spree killer
Stage name Keena, birth name Song Ja-kyung, South Korean singer and member of Fifty Fifty