| Unit Name: | 20th Frigate Squadron |
| Dates: | November 1961 – 1966 |
| Country: |  United Kingdom |
| Size: | Squadron |
| Commander1: | Captain Denis Jermain |
| Commander1 Label: | First |
| Commander2: | Captain Anthony S. Morton |
| Commander2 Label: | Last |
The 20th Frigate Squadron was an administrative unit of the Royal Navy from 1961 to 1966.
A squadron of 4 frigates was established at Derry, Northern Ireland, in 1961 initially comprising,, and . The squadron was responsible for the advanced training of officers in anti-submarine warfare and for the evaluation of modern anti-submarine equipment. Although operational from Derry, the ships assigned to the squadron continued to carry out their refits and intermediate dockings at their base ports (HMNB Devonport, Portsmouth and Rosyth).[1]
During its service, the squadron included Type 14, Type 15 and frigates.
| Commander | Ship | Dates | |
|---|---|---|---|
| Captain Denis Jermain | November 1961-April 1963 | ||
| HMS Yarmouth | April 1963-December 1964 | ||
| HMS Yarmouth | December 1964 – 1966 |