Joseph "Kaka" Baptista (17 March 1864 – 18 September 1930) was an Indian politician and activist from Bombay (today known as Mumbai), closely associated with the Lokmanya Tilak and the Home Rule Movement. He was the first president of Indian Home Rule League established in 1916. He was elected as the mayor of Bombay in 1925. He was given the title Kaka that means "uncle".