Authors Born on January 18
- David Hoffman Author, 1945
- David Ruffin Singer, 1941
- Edmund Barton Politician, 1849
- Edouard Rene de Laboulaye Writer, 1811
- Elijah Cummings Politician, 1951
- Elliott Jaques Psychoanalyst, 1917
- Elsa Einstein Leader, 1876
- Estelle Singer, 1980
- Fabrizio Moreira Talent Agent, 1982
- Gong Min-ji Singer, 1994
- Jacob Bronowski Mathematician, 1908
- Jane Horrocks Actress, 1964
- Jason Gray Guitarist, 1972
- Jason Segel Actor, 1980
- Jesse L. Martin Actor, 1969
- Jim O'Rourke Musician, 1969
- Joanna Newsom Singer-Songwriter, 1982
- John Boorman Film Maker, 1933
- John Hume Politician, 1937
- Jonathan Davis Singer, 1971
- Katie White Musician, 1983
- Kay Granger Politician, 1943
- Keisha Lance Bottoms Politician, 1970
- Kevin Costner Actor, 1955
- Kiki Smith Artist, 1954
- L. David Mech Scientist, 1937
- Leo Varadkar Politician, 1979
- Lionel Barber Journalist, 1955
- Luther Dickinson Guitarist, 1973
- M. C. Gainey Actor, 1948
- Marco Tronchetti Provera Chief Executive Officer, 1948
- Mark Messier Ice Hockey Player, 1961
- Mark Rylance Actor, 1960
- Martin O'Malley Politician, 1963
- Maulik Pancholy Actor, 1974
- Michael Behe Biochemist, 1952
- Michael Goldenberg Playwright, 1965
- Mick Kenney Musician, 1980
- Oliver Hardy Actor, 1892
- Paul Keating Politician, 1944