Hayley McGregory (born January 13, 1986) is an English-born American competition swimmer. She is a former world-record holder in the 50 and 100-meter backstroke (long course) and is the first woman to break a world record held by Natalie Coughlin in the 100 Backstroke.

Hayley McGregory swam at both the 2000 and the 2004 Olympic Trials. She failed to make the team. In 2004, she finished third in both backstroke events and, therefore, did not qualify.

In 2011, she became the head coach at Circle C Swim Team in Austin, Texas.

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