1984 U.S. Pro Indoor
Date	January 23–29
Edition	17th
Category	Grand Prix circuit
Draw	48S / 28D
Prize money	$ 300,000
Surface	Carpet / indoor
Location	Philadelphia, PA, United States
Venue	Spectrum
Champions
Singles
John McEnroe[1]
Doubles
Peter Fleming / John McEnroe[2]
← 1983 · U.S. Pro Indoor · 1985 →

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.

Finals

Singles

John McEnroe defeated Ivan Lendl 6–3, 3–6, 6–3, 7–6^(7–3)

• It was McEnroe's 1st singles title of the year and the 47th of his career.

Doubles

Peter Fleming / John McEnroe defeated Henri Leconte / Yannick Noah

• It was Fleming's 2nd title of the year and the 49th of his career. It was McEnroe's 1st title of the year and the 93rd of his career.