Gahagan is a surname of which is derived from

Geoghegan Geoghegan () is a surname of Irish origin. Often spelled without the prefix "Mac", the name has many variants, including Gehegan, Geoghan, Geohegan, Gahagan, Gagan, and Gagon which approximate the most common pronunciations of the name. It is ...

. Notable people with the surname include: * Dennis Gahagan (c. 1817–?), early settler in San Diego, California *

Helen Gahagan Douglas Helen Gahagan Douglas (born Helen Mary Gahagan; November 25, 1900 – June 28, 1980) was an American actress and politician. Gahagan Douglas's acting career included success on Broadway theatre, Broadway, as a touring opera singer, and in Hollyw ...

(1900–1980), American actress and politician * James Gahagan (1927–1999), American painter * John Gahagan (born 1958), Scottish footballer * Lawrence Gahagan (d.1820), Irish-born sculptor *

Sebastian Gahagan Sebastian Gahagan (1779 – 2 March 1838) was a sculptor of Irish descent active in London. His most notable works are the monument to Sir Thomas Picton in St Paul's Cathedral, and a statue of the Duke of Kent in Park Crescent, Portland Place. H ...

(1779–1838), Irish-born sculptor

See also