George Augustus Moore (24 February 1852 - 21 January 1933) was an Irish novelist, short-story writer, poet, art critic, memoirist and dramatist.

Moore came from a Roman Catholic landed family who lived at Moore Hall in Carra, County Mayo.

He originally wanted to be a painter, and studied art in Paris during the 1870s. There, he befriended many of the leading French artists and writers of the day.

As a naturalistic writer, he was amongst the first English-language authors to absorb the lessons of the French realists, and was particularly influenced by the works of Emile Zola.

His writings influenced James Joyce, according to the literary critic and biographer Richard Ellmann, and, although Moore's work is sometimes seen as outside the mainstream of both Irish and British literature, he is as often regarded as the first great modern Irish novelist."