Elka Graham (born 20 October 1981), now known by her married name Elka Whalan, is an Australian former competition swimmer who swam in the 2000 Sydney Olympics and 2004 Athens Olympics. Graham specialised in the 200-metre and 400-metre freestyle events, also swimming the 800-metre freestyle. She represented Australia at numerous international meets, including the Pan Pacific Championships, World Swimming Championships in 2001 and 2003, and the 2002 Commonwealth Games.