- Michael Barrett
- 3.69/3.99 metre(s)
- United States (San Francisco)
The largest athletic supporter / jock strap measures 3.69 m (12 ft 1 in) tall and 3.99 m (13 ft 1 in) wide. It was created by Michael Barrett (USA) and presented and measured in San Francisco, California, USA, on 18 October 2011.