* Nobel Prize in Literature (1948)
* Order of Merit (1948)
* Poetry Society of America's "The Golden Rose" award (1947)
* The Royal Society of Literature's "Gold Medal" (1936)
* The Poetry Society of America's "The Robert Frost Medal" (1958)
* The National Book Award in Poetry (1963)
He was also nominated for the Pulitzer Prize in Poetry several times but never won.