John Kamyuka (born January 11, 1989) is a Botswana swimmer, who specialized in sprint freestyle events.

[1] He became one of the first ever Botswana swimmers, alongside Samantha Paxinos to compete at the 2008 Summer Olympics, finishing among the top 75 in the men's 50 m freestyle.

[2] Kamyuka received a Universality invitation from FINA to compete as a lone male swimmer for the Botswana team in the 50 m freestyle at the 2008 Summer Olympics in Beijing.

[2] Swimming in heat five, Kamyuka raced his way to sixth place in a splash-and-dash finish with a lifetime best of 25.54 seconds.

Kamyuka failed to advance into the semifinals, as he placed seventy-second overall out of ninety-seven swimmers in the prelims.