Hugh Garahan (died 7 June 1940) was an Irish politician. A farmer, he was an unsuccessful candidate at the 1923 general election. He was first elected to Dáil Éireann at the June 1927 general election as a Farmers' Party Teachta Dála (TD) for the Longford–Westmeath constituency. He lost his seat at the September 1927 general election. In 1931 he was elected to the Free State Seanad and was re-elected to the Seanad in 1934.