Wendy Quirk (born May 29, 1959) is a former competition swimmer who represented Canada in international swimming events during the 1970s.

Quirk won eleven medals in major international swimming championships, spanning the FINA World Championships, Pan American Games and Commonwealth Games.

In her international debut as a 16-year-old, Quirk represented Canada at the 1975 Pan American Games in Mexico City, where she won a bronze medal for her third-place finish in the 100-metre butterfly.

Later that same year, she won bronze medals for her performances in the 100-metre butterfly and 4x100-metre freestyle relay in the 1978 World Aquatics Championships.

In her final international appearance at the 1979 Pan American Games in San Juan, Puerto Rico, she won a pair of silver medals as a member of the Canadian relay teams in the 4x100-metre freestyle and 4x100-metre medley events, together with two bronze medals in individual events, the 100-metre butterfly and 400-metre freestyle.