1979 ATP Buenos Aires – Singles

Guillermo Vilas defeated José Luis Clerc 6–1, 6–2, 6–1 to win the 1979 ATP Buenos Aires singles competition. José Luis Clerc was the defending champion.

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


 * 1) 🇦🇷 Guillermo Vilas (champion)
 * 2) 🇪🇸 José Higueras (quarterfinals)
 * 3)  Víctor Pecci, Sr. (first round)
 * 4) 🇺🇸 Eddie Dibbs (semifinals)
 * 5)  Hans Gildemeister (second round)
 * 6) 🇦🇷 José Luis Clerc (final)
 * 7)  Ivan Lendl (semifinals)
 * 8)  Tomáš Šmíd (quarterfinals)

Key

 * Q - Qualifier
 * NB: All rounds up to but not including the final were the best of 3 sets. The final was the best of 5 sets.