Ruma National Park is the only Terrestrial Park in Nyanza Province. It was initially known as the Lambwe Valley Game Reserve in 1966 to protect its indigenous population of rare roan antelopes which is only found in Ruma. In 1983 it was gazetted and renamed Ruma N. Park.

It was renamed “Ruma” upon request of the local community. The area had been so named by one of Kenya’s most powerful wizard, the much feared Gor Mahia who lived around the area where the park is located.