Athletics at the 2012 Summer Olympics – Men's 800 metres
The men's 800 metres competition at the 2012 Summer Olympics in London, United Kingdom, was held at the Olympic Stadium on 6–9 August. Fifty-five athletes from 43 nations competed. The event was won by David Rudisha of Kenya, the second consecutive and fourth overall title for Kenya in the event. Rudisha would later become the fourth man to successfully defend his Olympic 800 metres title, and the 11th to win two medals of any kind in the event. Nijel Amos' silver medal was the first Olympic medal ever for Botswana.