1977 Washington Star International

The 1977 Washington Star International was a men's tennis tournament and was played on outdoor clay courts in Washington, D.C., USA. It was part of the 1977 Grand Prix circuit and categorized as a 4 star event. It was the 9th edition of the tournament and was held in Washington, D.C. from July 18 through July 25, 1977. First-seeded Guillermo Vilas won the singles title, his second after 1975, and earned the $20,000 first-prize money. The singles final was delayed for two hours due to rain.

Singles
🇦🇷 Guillermo Vilas defeated 🇺🇸 Brian Gottfried 6–4, 7–5
 * It was Vilas' 6th singles title of the year and the 25th of his career.

Doubles
🇦🇺 John Alexander / 🇦🇺 Phil Dent defeated 🇺🇸 Fred McNair / 🇺🇸 Sherwood Stewart 7–5, 7–5