Karsten Leitner (born 4 June 1995) is a Canadian rugby union player for the Seattle Seawolves of Major League Rugby (MLR). His preferred position is wing.
Leitner signed for Major League Rugby side Seattle Seawolves during the 2021 Major League Rugby season. Leitner had previously represented the Canada Sevens team at 4 competitions between 2016 and 2017, and also represented Canada A in 2017.