1979 U.S. Clay Court Championships – Men's singles

Top-seed Jimmy Connors claimed the title and first prize money of $25,000 by defeating third-seeded Guillermo Vilas in the final.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇺🇸 Jimmy Connors (champion)
 * 2) 🇺🇸 John McEnroe (semifinals)
 * 3) 🇦🇷 Guillermo Vilas (final)
 * 4) 🇪🇸 José Higueras (semifinals)
 * 5) 🇦🇷 José Luis Clerc (quarterfinals)
 * 6) 🇺🇸 Gene Mayer (first round)
 * 7) 🇵🇱 Wojciech Fibak (third round)
 * 8) 🇪🇸 Manuel Orantes (quarterfinals)
 * 9) 🇺🇸 Eliot Teltscher (third round)
 * 10) 🇭🇺 Balázs Taróczy (third round)
 * 11) 🇮🇹 Corrado Barazzutti (quarterfinals)
 * 12)  Tomáš Šmíd (third round)
 * 13)  Ivan Lendl (quarterfinals)
 * 14) 🇦🇹 Peter Feigl (first round)
 * 15) 🇳🇿 Chris Lewis (second round)
 * 16) 🇦🇺 Peter McNamara (third round)