Rex Anthony Shelley (27 November 1930 – 21 August 2009) was a Eurasian Singaporean author. He was a graduate of the University of Malaya in Singapore and Cambridge who was trained in engineering and economics. Shelley managed his own business and also worked as member of the Public Service Commission (PSC) for over 30 years. For his service, he was conferred the Bintang Bakti Masyarakat by the Government of Singapore in 1978, and an additional Bar the next year.
Shelley started writing fiction late in life, publishing his first novel, The Shrimp People. at the age of sixty one. This was first substantial work by a Singaporean writer about the Eurasian community in Singapore and it won the 1992 National Book Development Council of Singapore (NBDCS) Award. In 2007, he was the Singaporean winner of the S.E.A. Write Award. Critics have responded positively to his writing, noting its "passionate, humane" style, and observing how his breadth of life experience gave rise to a talent for characterization plus an ability to blend "a sharp sense of observed commentary with historical detail".