1974 US Open – Men's singles

Jimmy Connors defeated Ken Rosewall in the final, 6–1, 6–0, 6–1 to win the men's singles tennis title at the 1974 US Open. It was his first US Open singles title and third major singles title overall. The final was the shortest-ever major men's singles final, both in number of games and duration, lasting only 1 hour and 18 minutes and 20 games. Rosewall remains the oldest major men's singles finalist, aged 39 years, 10 months and 6 days. Connors was the first player to win three majors in a season since Rod Laver in 1969 (he was banned from the fourth, the French Open, due to his being a member of World TeamTennis).

John Newcombe was the defending champion, but lost in the semifinals to Rosewall.

This was the last edition of the tournament to be played on grass courts; the following three years would feature clay courts, and afterwards hardcourts.