N
- Molly Keane (1904–1996) (writing as M.J. Farrell)
- Charles Kickham (1828–1882)
- Charles Lever (1806–1872)
- C. S. Lewis (1899–1963)
- Samuel Lover (1797–1868)
- David Marcus (born 1924)
- Patrick McCabe (born 1955)
- Colum McCann (born 1965)
- Barry McCrea (born 1974)
- John McGahern (1934–2006)
- Adrian McKinty(born 1968)
- George McWhirter (born 1939)
- Brinsley MacNamara (1890–1963) (real name John Weldon, see Valley of the Squinting Windows)
- Charles Robert Maturin (1782–1824)
- Brian Moore (1921–1999)
- George Moore (1852–1933)
- Lady Morgan (Sidney Owenson) (1776?–1859)
- Margaret Mulvihill (born 1954)
- Iris Murdoch (1919–1999)
- Christy Nolan (1965–2009)
Read more about this topic: List Of Irish Novelists, K