The Enterprise Cup is an annual rugby union competition in Kenya, Tanzania and Uganda, though the competition frequently has the appearance of being an all-Kenyan affair as the majority of rugby clubs in the African Great Lakes region are based in this one country and frequently clubs in Tanzania and Uganda are unable to take part due to financial constraints. The original cup was donated by sailors from HMS Enterprise, who had toured British East Africa in 1928. The only years in which the competition has not been played is between 1940–1946 due to World War II and in 1987 because an international rugby competition was held on RFUEA Ground as part of the All Africa Games.

HMS Enterprise was one of two Emerald-class light cruisers built for the Royal Navy. She was built by John Brown & Company, with the keel being laid down on 28 June 1918. She was launched on 23 December 1919, and commissioned on 7 April 1926. She was the 14th ship to serve with the Royal Navy to carry the name Enterprise, a name which is still used in the Royal Navy today.