Most siblings to compete in a single Summer Olympic Games
- Who
- Raul Duarte, Ricardo Duarte, Enrique Duarte, Luis Duarte
- What
- 4 total number
- Where
- Japan (Tokyo)
- When
- from 11 to 23 October 1964
The most siblings to compete in a single Summer Olympic Games event is 4 and was achieved by Ricardo, Raúl, Fernando Luis and Enrique Duarte Mungi (all Peru) who played on the men's basketball team at the 1964 Summer Olympics, in Tokyo, Japan, from 11 to 23 October 1964.
In 1964 the Duarte brothers made up one third of the entire Peruvian Olympic basketball team. The team played nine games, from which they won three times.