| No. 240 Squadron RAF | |
|---|---|
| Active | 20 Aug 1918 - 15 May 1919 30 Mar 1937 - 31 May 1946 1 May 1952 - 1 Nov 1958 1 Aug 1959 – 8 Jan 1963 |
| Country |  United Kingdom |
| Branch |  Royal Air Force |
| Role | Anti-submarine warfare Maritime patrol Strategic Missile Force |
| Motto(s) | Icelandic: Sjo-Vordur Lopt-Vordur (Translation: "Guardian of the sea, guardian of the sky")[1] |
| Insignia | |
| Squadron Badge heraldry | A viking helmet[1] |
| Squadron Codes | SH (Apr 1939 - Sep 1939)[2] BN (Sep 1939 - Jun 1942)[3] L (May 1952 - 1956)[4] 240 (1956 - Nov 1958) |
No. 240 Squadron RAF was a Royal Air Force flying boat and seaplane squadron during World War I, World War II and up to 1959. It was then reformed as a strategic missile squadron, serving thus till 1963.