Mallory Comerford (born September 6, 1997) is an American competitive swimmer specializing in freestyle events.

[4] The following year, Comerford won eight medals in individual and relay events at the 2018 World Swimming Championships.

In 2019, she was a member of the inaugural International Swimming League representing the Cali Condors, who finished third place in the final match in Las Vegas, Nevada in December.

[8] At the 2017 U.S. Nationals, she won the gold medal in the 100 meter freestyle in a new US Open record of 52.81, and also qualified for the 2017 World Aquatics Championships.

In the 4 × 100 meter mixed freestyle relay, Comerford and her teammates Caeleb Dressel, Nathan Adrian, and Simone Manuel broke the world record with a time of 3:19.60.