The 1985 Buenos Aires Grand Prix was a Nabisco Grand Prix tennis tournament held in Buenos Aires, Argentina. The tournament was held from February 25 to March 3.
Martín Jaite defeated Diego Pérez 6–4, 6–2
- It was Jaite's 2nd title of the year and the 2nd of his career.
Martín Jaite / Christian Miniussi defeated Eduardo Bengoechea / Diego Pérez 6–4, 6–3
- It was Jaite's 1st title of the year and the 1st of his career. It was Miniussi's only title of the year and the 1st of his career.