In Buganda mythology, Mukasa is the god of Lake Victoria and fertility.
Mukasa is one of the balubaale, the deities of traditional Baganda religion. He is associated with fertility, prosperous harvests, health, and general abundance, while also serving as a guardian of Lake Victoria. Because water, food production, and fertility were closely connected, his responsibilities extended beyond the lake itself.
His principal temple was traditionally located on Bubembe Island in Lake Victoria. Accounts describe Mukasa as a benevolent deity who could provide guidance, healing, and prosperity. Some traditions say he began as a remarkable human hero who later ascended to godhood; other accounts describe him as a supernatural being who simply disappeared from ordinary human life.
Mukasa is often confused with Kibuka, his brother in some traditions and the god of war. Walumbe is associated with death, while Kintu is a culture hero and ancestral figure rather than the lake and fertility deity. Mukasa’s name may appear as Mugasa in related Rutara-speaking traditions.