| 1977 U.S. Pro Tennis Championships | |
|---|---|
| Date | August 22 – 30 |
| Edition | 50th |
| Category | Grand Prix (4 Star) |
| Draw | 64S/32D |
| Prize money | $125,000 |
| Surface | Clay / outdoor |
| Location | Boston, USA |
| Venue | Longwood Cricket Club |
| Champions | |
| Singles | |
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| Doubles | |
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The 1977 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor green clay courts (Har-Tru) at the Longwood Cricket Club in Boston, USA. The event was categorized as a 4 Star tournament and was part of the 1977 Grand Prix circuit. It was the 50th edition of the tournament and was held from August 22 through August 30, 1977. Third-seeded Manuel Orantes won the singles title and the accompanying $32,000 first-prize money as well as 125 Grand Prix ranking points. First-seeded Jimmy Connors withdrew after the quarterfinals due to a back injury.
Manuel Orantes defeated
Eddie Dibbs 7–6, 7–5, 6–4
Bob Lutz /
Stan Smith defeated
Brian Gottfried /
Bob Hewitt 6–3, 6–4