The 1984 U.S. Pro Indoor was a men's tennis tournament played on indoor carpet courts that was part of the 1984 Volvo Grand Prix. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States and took place from January 23 through January 29, 1984. Second-seeded John McEnroe won his third consecutive singles title at the event.
See main article: 1984 U.S. Pro Indoor – Singles. John McEnroe defeated Ivan Lendl 6–3, 3–6, 6–3, 7–6(7–3)