Lisa Bentley (born November 28, 1968) is a Canadian triathlete.

She has been competing on the Ironman race series since late in the 1990s.

In 1988, Bentley was diagnosed with cystic fibrosis.

[1] Despite this, she has won 11 Ironman competitions.

[2] In 2006, Bentley placed third at the Ironman World Championship, her best showing and finished second at the Ironman 70.3 World Championships in Clearwater, Florida three weeks later.