Martin Green (10 July 1932 – 4 February 2015) was an English-born writer, editor and publisher.
Born in , England, Green was schooled at A. S. Neill's Summerhill, while his parents fought in the International Brigades during the Spanish Civil War. Green co-founded the literary periodical Nimbus (1951–58) with Tristram Hull and later worked as an editor at MacGibbon & Kee, where he published alongside Timothy O'Keeffe books such as Nell Dunn's Up the Junction (1963). They went on to form their own publishing house, Martin Brian & O'Keeffe, with the editor Brian Rooney. Here, Green collected and published Patrick Kavanagh, following the suggestion of the painter Patrick Swift and the poet Anthony Cronin. Green also published books by Flann O'Brien, Hugh MacDiarmid, Francis Stuart, Colin MacInnes,Robert Graves, Frank Sargeson, Paul Potts and many other writers.
While living in London with his wife, the artist Fiona Green, Thabo Mbeki and the (then banned) African National Congress held their meetings in their house in Fitzrovia. In 1969, with poet Paul Durcan, Green also started the poetry quarterly Two Rivers, which was published from his home at 28 Tottenham Street, London. The title referred to the River Thames of London and the Liffey of Durcan's Dublin, Ireland.