Sixto Soria Savigne (born April 27, 1954) is a Cuban boxer, who won the silver medal in the men's Light Heavyweight (81 kg) category at the 1976 Summer Olympics in Montreal. As the top favourite he lost in a close fight to Leon Spinks of USA. Two years later he captured the world title at the second World Championships in Belgrade.
- 1st round bye
- Defeated José Rosa (Puerto Rico) KO 2
- Defeated Wolfgang Gruber (West Germany) KO 2
- Defeated Costică Dafinoiu (Romania) RSC 1
- Lost to Leon Spinks (Cuba) RSC 3
World amateur championships