Jannik Sinner defeated Taylor Fritz in the final, 6–3, 6–4, 7–5 to win the men's singles tennis title at the 2024 US Open.

Sinner became the fourth (and youngest) man to win both hardcourt singles majors (Australian Open and US Open) in the same year, after Mats Wilander, Roger Federer and Novak Djokovic, and the first to win his first two major singles titles in the same year since Guillermo Vilas in 1977.

Djokovic was the defending champion and was vying for a record-breaking 25th major title, but he lost in the third round to Alexei Popyrin.

[4] The semifinal between Fritz and Frances Tiafoe marked the first all-American major men's semifinal since Andre Agassi defeated Robby Ginepri at the 2005 US Open, with Fritz becoming the first American man to reach a major final since Andy Roddick at the 2009 Wimbledon Championships, and the first to do so at the US Open since Roddick in 2006.

[6] The first-round match between Dan Evans and Karen Khachanov was the longest match in the tournament's history at 5 hours and 35 minutes, surpassing the previous record of 5 hours and 26 minutes from the 1992 semifinal between Stefan Edberg and Michael Chang.