2023 U.S. Men's Clay Court Championships – Singles

Singles
2023 U.S. Men's Clay Court Championships
Champion Frances Tiafoe
Runner-up Tomás Martín Etcheverry
Score7–6(7–1), 7–6(8–6)
Draw28 (4 Q / 3 WC)
Seeds8

Frances Tiafoe defeated Tomás Martín Etcheverry in the final, 7–6(7–1), 7–6(8–6) to win the singles tennis title at the 2023 U.S. Men's Clay Court Championships. It was Tiafoe's first ATP Tour title in five years.

Reilly Opelka was the reigning champion, but could not defend his title due to injury.

Rain disrupted play midway through the tournament, causing several second round matches and all quarterfinals to be moved to Saturday, with the semifinals and final played on Sunday.