Meagher is a surname. Notable people with the surname include:
Aileen Meagher (1910–1987), Canadian athlete
Jill Meagher (1982–2012), victim of a murder in Melbourne, Australia
Jack Meagher (1896–1968), American football coach
Jim Meagher, founder of Meagher Electronics
John Meagher, Irish architect, partner in De Blacam & Meagher
John Meagher (politician) (c. 1805–1876), merchant and politician in Canada East
John F. Meagher (born 1948), Australian Thoroughbred racehorse trainer
John W. Meagher (1917–1996), United States soldier, Medal of Honor recipient
Karen Meagher, English actress
Lory Meagher (1899–1973), Irish hurler
Margaret Meagher (1911–1999), Canadian diplomat
Mary T. Meagher (born 1964), American swimmer
Ray Meagher (born 1944), Australian actor
Reba Meagher (born 1967), Australian politician
Rick Meagher (born 1953) Canadian ice hockey player
Roderick Meagher (1932–2011), Australian jurist and judge
Thomas Meagher (merchant) (c 1764–1837) Irish emigrant to Newfoundland, merchant and ship-owner
Thomas Meagher (MP) (1796–1874), Irish businessman and politician, Mayor of Waterford and MP for Waterford 1847–57
Thomas Francis Meagher (1823–1867), leader of the Young Irelanders in the 1848 Rebellion, Union general, acting Governor of the Montana Territory
Thomas William Meagher (1902–1979) Australian medical practitioner, Lord Mayor of Perth, Western Australia
William Meagher (born 1984), Northeast USA snow mobile association Grandmaster.
