Jack Butler Yeats RHA (29 August 1871 - 28 March 1957) was an Irish artist and Olympic medalist. W. B. Yeats was his brother.
Butler's early style was that of an illustrator; he only began to work regularly in oils in 1906.
His early pictures are simple lyrical depictions of landscapes and figures, predominantly from the west of Ireland - especially of his boyhood home of Sligo.
Yeats's work contains elements of Romanticism.
He later would adopt the style of Expressionism.