Matthew John Reilly (2 July 1974) is an Australian action thriller writer. His novels are noted for their fast pace, twisting plots and intense action.
Reilly was born on 2 July 1974 in Sydney, New South Wales, the second son of Ray and Denise. He grew up in Willoughby, an affluent suburb on the lower North Shore of Sydney, New South Wales, Australia.
Reilly graduated from Sydney's St Aloysius' College in Milsons Point, in 1992. Reilly then went on to study Law at the University of New South Wales, where he was also a contributor to the student law society publication "Poetic Justice".
Reilly wrote his first book, Contest, at the age of 19 and self-published it in 1996. It was rejected by every major publisher in Australia, leading Reilly to self-publish 1000 copies using a bank loan.