Martín Jaite defeated Diego Pérez 6–4, 6–2 to win the 1985 Buenos Aires Grand Prix singles competition. Guillermo Vilas was the champion but did not defend his title.
Seeds
Diego Pérez (final) Alejandro Ganzábal (first round) Martín Jaite (champion) Hans Gildemeister (first round) Horacio de la Peña (semifinals) Jimmy Brown (semifinals) Eduardo Bengoechea (first round) Roberto Argüello (quarterfinals)
Draw
Finals
Top half
Bottom half
External links 1985 ATP Buenos Aires Singles draw