Casey Comber (born November 4, 1996) is an American middle distance runner who competes for Under Armour.
Comber attended Hatboro-Horsham Senior High School in Pennsylvania before studying Finance at Villanova University.
While competing for the Villanova, he notably finished second in the mile at the 2019 NCAA Division I Indoor Track and Field Championships.
In April 2023, Comber finished runner-up to Hobbs Kessler at the BAA Invitational mile in Boston, Massachusetts. That same month, Comber finished runner-up at the USATF One Mile Championship. In June 2023, Comber ran a personal best time of 3:34.24 for the 1500m at the Meeting Nikaia in Nice, France. In November 2023, Comber won the bronze medal at the 2023 Pan American Games in Santiago, Chile over 1500 metres.
In 2024, and 2025, Comber won the B.A.A. Invitational Mile Road Race in Boston, Massachusetts, finishing ahead of Canadian Aaron Ahl in both races. In February 2025, Comber acted as a pacemaker as Grant Fisher set a new 3000 metres indoors world record at the Millrose Games in New York City.
<small>All statistics taken from World Athletics Profile</small>
<nowiki>*</nowiki>Not Legal