Sembuge Gamini Shelton Fonseka was a Sri Lankan film actor, film director and politician.
Fonseka was born onMarch 1936 in Dehiwela the third child of William and Daisy Fonseka. Starting school at a Presbyterian institution, Gamini moved on to S. Thomas College, Mt. Lavinia. As a youngster, he gained repute for imitating administrative figures at school. Gamini also prospered in the study of the Sinhala language and literature and placed in the upper fourth for a Sinhala literature prize. The award for this achievement was presented to him by S. Thomas graduate and Sri Lankan Prime Minister D. S. Senanayake. Gamini was also an accomplished cricket player. Gamini Fonseka married his longtime girlfriend Dorothy Margaret Valencia also known as Tina in 1962 and had four children Chamila, Thanuja, Dammith and Ishara. Many years later he also fathered Kaushalya and Poornima. He remained married to Tina until his death in September 2004.