Olga "Olguita" Antonetti Núñez (February 19, 1945 – December 12, 1968) was a Venezuelan beauty pageant titleholder for 1962, and the official representative of Venezuela to the Miss International 1962 pageant held in Long Beach, California, USA, on August 18, 1962, when she classified in the Top 15 semifinalists.
Antonetti died in a plane crash on December 12, 1968, at the age of 23.