| Unit Name: | No. 681 Squadron RAF |
| Dates: | 2 January 1943 – 1 August 1946 |
| Country: | United Kingdom |
| Branch: | Royal Air Force |
| Command Structure: | No. 221 Group RAF, RAF India Command No. 231 Group RAF, Air Command South-East Asia AHQ Burma, Air Command South-East Asia |
| Identification Symbol: | No badge known to have been authorised |
| Identification Symbol Label: | Squadron Badge heraldry |
| Identification Symbol 2: | No code(s) are known to have been carried by this squadron |
| Identification Symbol 2 Label: | Squadron Codes |
No. 681 Squadron RAF was a photo-reconnaissance squadron of the Royal Air Force during the Second World War.
It was formed out of No. 3 PRU, at Dum Dum in India on 2 January 1943, as part of RAF Far East Air Force. Initially it was mostly equipped with Hurricane PR.Mk.II and Spitfire PR.Mk.IV fighters, but there was also a Dutch element in 'C' flight that operated North American Mitchells, which belonged to the former Royal Netherlands East Indies Army Air Force. The squadron re-equipped with Mosquito PR.IXs in August 1943, and Spitfire PR.XIs in October.
In November 1943 the twin-engined elements were used to form No. 684 Squadron RAF. 681 Squadron, which was now entirely equipped with the Spitfire PR.XI, moved to RAF Alipore, Bengal in May 1944, where the squadron was under No. 171 Wing RAF on 1 July 1944 https://www.ibiblio.org/hyperwar/UN/UK/UK-RAF-III/UK-RAF-III-XII.html, and RAF Mingaladon, Burma in June 1945, receiving Spitfire PR.XIX photo-reconnaissance aircraft in August of that year. The squadron moved to RAF Kai Tak, Hong Kong, in September 1945, when the war formally ended. Detachments from the squadron however were still located and kept busy at a wide range of airfields across the South-East Asian theatre of war. The squadron was disbanded by renumbering it to No. 34 Squadron RAF on 1 August 1946 at RAF Palam, Punjab, (then) British India.
| January 1943 | November 1943 | Mk.II (B-25C) | ||
| January 1943 | November 1943 | Mk.IIc | ||
| January 1943 | December 1944 | PR.Mk.IV | ||
| August 1943 | November 1943 | Mks.II, IV & IX | ||
| October 1943 | August 1946 | Supermarine Spitfire | PR.XI | |
| August 1945 | August 1946 | Supermarine Spitfire | PR.XIX |
| 25 January 1943 | 9 December 1943 | Detachments at RAF Alipore, Bengal, British India and RAF Agartala, Tripura, British India | ||
| 9 December 1943 | 30 January 1944 | RAF Chandina, Bengal, British India | ||
| 31 January 1944 | 5 May 1944 | RAF Dum Dum, Bengal, British India | ||
| 5 May 1944 | 25 May 1945 | RAF Alipore, Bengal, British India | Detachments at RAF Comilla, Bengal, British India; RAF Imphal, Manipur, British India; RAF Kalemyo, Burma; RAF Meiktila, Burma; RAF Monywa, Burma; and RAF Mingaladon, Burma | |
| 25 May 1945 | 27 September 1945 | RAF Mingaladon, Burma | Detachment at RAF Alipore, Bengal, British India | |
| 27 September 1945 | 23 December 1945 | RAF Kai Tak, Hong Kong | ||
| 23 December 1945 | 9 January 1946 | Detachments at Kemayoran Airport Batavia, Dutch East Indies and Tân Sơn Nhất Airfield, Saigon, Vietnam | ||
| 10 January 1946 | 28 May 1946 | RAF Seletar, Singapore | Detachments at Kemayoran Airport, Dutch East Indies; Don Muang Air Base, Thailand and RAF Mingaladon, Burma | |
| 28 May 1946 | 1 August 1946 | RAF Palam, Punjab, British India | Detachment at RAF Kohat, Punjab, British India |
| January 1943 | December 1943 | W/Cdr. S.G. Wise, DFC and Bar | |
| December 1943 | April 1945 | W/Cdr. F.D. Proctor, DFC | |
| April 1945 | May 1946 | W/Cdr. D.B. Pearson | |
| May 1946 | August 1946 | S/Ldr. H. Roberts |