Alex Diakun (born February 8, 1946) is a Canadian actor.

Diakun was born in Rycroft, Alberta. He began his schooling in Chilliwack, British Columbia and finished with a BFA from the University of Alberta. Diakun has been acting for over three decades. He has appeared in over 200 stage plays, and many television guest appearances. Credits include a blue-faced alien (Chief Technical Director Höone) in the series Andromeda, The Outer Limits, and the feature film Valentine.