MacGreevy had an influence on Irish modernist writing far beyond what his small (but highly original) body of poetry might suggest. He was a good friend and strong supporter of Yeats, introducing Beckett (whom he also influenced) to him. Eliot employed him as a reviewer in London. In Paris, MacGreevy became a close friend to Joyce, helped and supported him, and introduced the newly-arrived Beckett to him. He wrote to Stevens when told that the American had praised his poems, initiating a lifelong correspondence; they met, once, in New York (Moore was also present). Antheil dedicated a piece to him.