Dumbarton Harp Social Club was established on 1st of May 1997.  It was initially founded to provide members of Dumbarton Harp Celtic Supporter's Club (founded 1967) a place to socialise in a safe and economical basis.  However, stringent adherence to key elements of the club's constitution, whereby all forms of equality and diversity are valued and not discriminated against, has ensured that the Dumbarton Harp Social Club of today is an accumulation of a wide and diverse mixture of businesses, recreational and social groups and a hub of the local community. 

The club is administered by a Management Committee of 13 elected members in accordance with the clubs' constitution. The committee consists of seven elected Officers, President, Vice-President, Secretary, Treasurer, Bar Officer, Building Officer, Entertainment Officer and six ordinary members.    

Initially the Club rented two floors of a converted 19th century church at the northern end of Dumbarton High Street. This comprised of what is now the Lisbon Lounge and the Harp Suite on the middle floor, and a fully functioning snooker hall on the top floor. Both areas in the middle floor were developed by the members.

In 1999 the opportunity arose to expand the business and take over adjoining parts of the building; which added a function hall (The Kilmhor Suite) and an indoor market situated at ground level in the High Street. The function suite too, was built by the members themselves.

As of October 2009, the club has over 400 members.  It supports a juvenile football team (U19s), men and women’s domino teams, and also a netball team. All are all sponsored by the club.