The 1985 Nabisco Grand Prix de Verano, also known as the Buenos Aires Grand Prix, was a men's Nabisco Grand Prix tennis tournament held in Buenos Aires, Argentina and played on outdoor clay courts.

It was the 17th edition of the tournament and was held from 25 February to 3 March 1985.

Third-seeded Martín Jaite won the singles title.

Martín Jaite defeated Diego Pérez 6–4, 6–2 Martín Jaite / Christian Miniussi defeated Eduardo Bengoechea / Diego Pérez 6–4, 6–3 *per team