Joseph Edamaruku (7 September 1934 – 29 June 2006), popularly identified by his surname Edamaruku, was a well known journalist and rationalist from Kerala. He was the Delhi Bureau chief of the Malayalam magazine Keralasabdam for more than twenty years, and the founder-editor of Therali, a rationalist periodical in Malayalam. He was president of the Indian Rationalist Association from 1995 to 2005.