Saint-John Perse (; also Saint-Leger Leger; pseudonyms of Alexis Leger) (31 May 1887 – 20 September 1975) was a French poet-diplomat, awarded the Nobel Prize for Literature in 1960 "for the soaring flight and evocative imagery of his poetry." He was a major French diplomat from 1914 to 1940, after which he lived primarily in the United States until 1967.