There have been six ships of the Royal Navy named HMS Lancaster:
- was an 80-gun first rate built in 1694, then rebuilt and relaunched in 1722, and rebuilt for a third time to a 66-gun third rate in 1749.
- was an East Indiaman, fitted out as a third rate 64-gun ship in 1797.
- was a frigate of 1823, scrapped in 1864.
- was a of 1902 which paid off in 1919.
- , formerly , was a transferred as part of the 1940 Destroyers for Bases Agreement.
- , a Type 23 frigate commissioned in 1992 and withdrawn from service in 2025.
Battle honours
Ships that have borne the name Lancaster for the Royal Navy have earned the following battle honours;
- Louisburg 1758
- Camperdown 1797
- Atlantic 1941
- Arctic 1942
- North Sea 1943–45