1983 US Open – Men's singles

Men's singles
1983 US Open
Champion Jimmy Connors
Runner-up Ivan Lendl
Score6–3, 6–7(2–7), 7–5, 6–0
Draw128
Seeds16

Defending champion Jimmy Connors defeated Ivan Lendl in a rematch of the previous year's final, 6–3, 6–7(2–7), 7–5, 6–0 to win the men's singles tennis title at the 1983 US Open. It was his fifth US Open singles title, eighth and last major singles title overall, and 100th top-level singles title overall.

This edition of the tournament set an Open Era record for the most five-set matches at a singles major, at 35. It was later surpassed by the 2024 Wimbledon Championships.