KC Lightfoot[3] (born November 11, 1999) is an American pole vaulter.

He holds the American record with a clearance of 6.07 m (19 ft 11 in) at the Music City Track Carnival in Nashville on June 2, 2023.

This broke the record of 6.06 set by Sam Kendricks, the 2017 and 2019 World champion, in 2019.

Lightfoot now ranks fourth on the world all-time list behind Swedish-American Mondo Duplantis (6.26 m, reigning Olympic and world champion), Frenchman Renaud Lavillenie (6.16 m indoors) and Ukrainian Sergey Bubka (6.15 m indoors, 6.14 m outdoors).

He finished third at the 2019 USA Outdoor Track and Field Championships with a personal best jump of 5.76 m.