Portal:Sports/Selected anniversaries/August
- August 3, 1949 – The Basketball Association of America and the National Basketball League merge to form the National Basketball Association
- August 7, 1983 – The inaugural World Championships in Athletics competition begins in Helsinki, Finland
- August 14, 2010 – The inaugural Youth Olympic Games (opening ceremony pictured) multi-sport event begins in Singapore
- August 18, 1915 – The first game of the Japanese High School Baseball Championship, the largest scale amateur sport event in Japan, takes place
- August 28, 1982 – The inaugural Gay Games, originally called the Gay Olympics, open in San Francisco, California