1974 U.S. Pro Tennis Championships – Singles

The 1974 U.S. Pro Tennis Championships – Singles was an event of the 1974 U.S. Pro Tennis Championships tennis tournament and was played on outdoor green clay courts at the Longwood Cricket Club in Chestnut Hill, Massachusetts in the United States from August 20 through August 26, 1974. The draw comprised 64 players. Jimmy Connors was the defending U.S. Pro Tennis Championships singles champion but did not compete in this edition. Björn Borg won the title by defeating Tom Okker in the final, 7–6(7–3), 6–1, 6–1.