The flag of Tristan da Cunha was adopted on October 20, 2002, in a proclamation made by the Governor of Saint Helena under a Royal Warrant granted by Queen Elizabeth II. Prior to this, as a dependency of Saint Helena, Tristan da Cunha used the flag of Saint Helena for official purposes.
The flag is a blue ensign design, defaced with the coat of arms of Tristan da Cunha — a Tristan longboat above a Naval Crown, with a central shield decorated with four yellow-nosed albatrosses and flanked by two Tristan rock lobsters. Below this is a scroll with the territory's motto, Our faith is our strength.
The designer is the prominent vexillologist Graham Bartram.