Liam Mulvihill (born 25 May 1946) is an Irish retired Gaelic games administrator.
Mulvihill moved to Nenagh, County Tipperary in 1974 when he was appointed as a primary schools inspector.
Mulvihill played Gaelic football for Kenagh and at all grades for the Longford county team before becoming involved in the administration of the game.
Mulvihill served in this position until 1974 when he was elected Longford county representative on the GAA's Central Council.
Mulvihill was the unanimous choice to succeed Seán Ó Síocháin as Director-General of the GAA in 1979.