Daniel Harrington

Daniel Harrington or Dan Harrington may refer to:

• Daniel C. Harrington (1849–?), American sailor who won the Medal of Honor for his actions in the American Civil War
• Daniel J. Harrington (1940–2014), American Roman Catholic theologian and academic
• Dan Harrington (born 1945), professional poker player
• Dan Harrington (politician) (born 1938), Montana state senator
• Dan Harrington (footballer) (born 1953), former Australian rules footballer