Attupurathu Mathew Abraham (11 June 1924 – 1 December 2002), pen name Abu, was an Indian cartoonist, journalist, and author. In a long career spanning 40 years, Abu Abraham worked for various national and international newspapers including The Bombay Chronicle, Shankar's Weekly, Blitz, Tribune, The Observer (1956–66), The Guardian (1966–69), and The Indian Express (1969–81). He was a lifelong atheist and rationalist.