Guillermo Vilas was the defending champion and won in the final 6–3, 0–6, 7–5, 6–2 against Manuel Orantes.
Draw
NB: All rounds up to but not including the semifinals were the best of 3 sets. The semifinals and final were the best of 5 sets.
Final
Section 1
Section 2
External links 1974 Buenos Aires Grand Prix Singles draw