This is a List of First Lords of the Admiralty of England, Great Britain and then the United Kingdom. The earlier Lords High Admiral were mostly courtiers or members of the Royal family. When the office of Lord High Admiral was "put into commission" it was exercised by a board of Lords Commissioners (or "Sea Lords") headed by a First Lord of the Admiralty, and not by a single man. The office of First Lord remained a political one which did not need to be filled by a professional naval officer, although it sometimes was.

The Lords Commissioners of the Admiralty were the members of the Board of Admiralty, which exercised command over the Royal Navy.