Liam Harrison (born 1953) is an Irish musician and songwriter. He and his group, Goal Celebrities, had a 1990 number 1 hit in Ireland with "Give It a Lash Jack". The song was dedicated to Jack Charlton, manager of the Republic of Ireland national football team which got to the quarterfinals of the 1990 FIFA World Cup.
In a 2011 interview on RTÉ Irish Television, Jim Sheridan (Film Director) stated that Bono and himself agreed that "Give It a Lash Jack" was the "Greatest Irish song ever written".
Harrison has two children, Kevin (member of Dublin Band 'Dry County') and Deirdre.
He currently plays with Streetwise (Dublin).