English poet and novelist best known for his novel The White Hotel (1981), in which fantasy and psychological insight are mingled.

Thomas served in the British army and then studied at the University of Oxford (B.A., 1958; M.A., 1961). He made his initial reputation as a poet whose subjects range from eroticism to science fiction to his native Cornwall; his later collections, including The Shaft (1973), Love and Other Deaths (1975), and The Honeymoon Voyage (1978), won praise for their examinations of death, loss, and aspects of sexuality.

His translations of Russian poet Anna Akhmatova (Akhmatova, Anna), first collected in 1976, influenced his later fiction as well as his poetry. Akhmatova is the model for the title character of The Flute-Player (1979). Like that work, his second novel, Birthstone (1980), is a fantasy. The White Hotel concerns Lisa Erdman, an early patient of Sigmund Freud; it explores her sexual hysteria and her premonitions of the 1941 Baby Yar massacre, in which she eventually dies. Part of the novel is in the form of a poem. Thomas returned to fantasy in most of his later novels, including the four novels that make up his Russian Nights tetralogy: Ararat (1983), Swallow (1984), Sphinx (1986), and Summit (1987). His other novels include Lying Together (1990), Flying into Love (1992) and Lady with a Laptop (1996).