William Trevor Cox (24 May 1928 – 20 November 2016), known by his pen name William Trevor, was an Irish novelist, playwright, and short story writer. One of the elder statesmen of the Irish literary world, he is widely regarded as one of the greatest contemporary writers of short stories in the English language.

Trevor won the Whitbread Prize three times and was nominated five times for the Booker Prize, the last for his novel Love and Summer (2009), which was also shortlisted for the International Dublin Literary Award in 2011. His name was also mentioned in relation to the Nobel Prize in Literature. He won the 2008 International Nonino Prize in Italy. In 2014, Trevor was bestowed with the title of Saoi within Aosdána.

Trevor resided in England from 1954 until his death at the age of 88.