"Utopia" ("Libellus vere aureus, nec minus salutaris quam festivus, de optimo rei publicae statu deque nova insula Utopia") is a work of fiction and political philosophy by Thomas More (1478–1535) published in 1516 in Latin. The book is a frame narrative primarily depicting a fictional island society and its religious, social and political customs.

Sir Thomas More (7 February 1478 – 6 July 1535), venerated in the Catholic Church as Saint Thomas More, was an English lawyer, social philosopher, author, statesman, and noted Renaissance humanist. He was also a councillor to Henry VIII, and Lord High Chancellor of England from October 1529 to 16 May 1532. He wrote "Utopia", published in 1516, about the political system of an imaginary, ideal island nation.