The Admiralty is a pub at 66 Trafalgar Square, London. It is the only pub situated on the square. The Italianate building was built in 1871 by the architect F. W. Porter for the Union Bank. It was listed at Grade II in 1987, by which time it was a branch of the National Westminster Bank. In 2005, the building became Albannach, a restaurant which specialised in Scottish food and whisky. It was founded by Niall Barnes, a Glasgow entrepreneur.