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.
As a rationalist and an atheist, he wrote over 170 books on various subjects ranging from religion to philosophy to miracles. His autobiography, The Times that Raised the Tempest won a Kerala Literary Academy award. He also translated and published in Malayalam the complete works of Abraham Kovoor. His son, Sanal Edamaruku, is a prominent Indian rationalist and president of the Rationalist International. Some of his most important works are:
Kristhuvum Krishnanum Jeevichirunnilla (Christ & Krishna Never Lived)
Upanishathukal Oru Vimarsana Patanam (Upanishands: A Critical Study)
Quran Oru Vimarsana Patanam (Quran: A Critical Study)
Bhagavad Gita Oru Vimarsana Patanam (Bhagavad Gita: A Critical Study)
Yukthivada Rashtram (Rationalist Nation)
Kovoorinte Sampoorna Krithikal (Complete Works of Abraham Kovoor: Translation)