| Unit Name: | No. 34 Squadron Finnish Air Force |
| Dates: | 23 January 1943 - 5 September 1944 |
| Country: | Finland |
| Branch: | Finnish Air Force |
| Role: | fighter |
| Battles: | Continuation War |
No. 34 Squadron (Finnish: Lentolaivue 34 or Finnish: Le.Lv.34), renamed No. 34 Fighter Squadron (Finnish: Hävittäjälentolaivue 34 or HLe.Lv.34 on 14 February 1944) was a fighter squadron of the Finnish Air Force during World War II. The squadron was part of Flying Regiment 3.
The pilots of the No. 34 Squadron achieved 345 confirmed kills, all with Bf 109Gs. The unit lost 30 aircraft (13 in air combat, 5 to anti-aircraft fire, 7 in accidents and 5 due to technical faults). 12 pilots were listed as dead or missing, one was captured. Three pilots of the No. 34 Squadron was awarded the Mannerheim Cross.
On 4 December 1944 No. 34 Squadron was redesignated No. 33 Squadron when the Finnish Air Force demobilized after the end of the Continuation War.[1]
The unit had an operational strength of 16 Messerschmitt Bf 109G-2s. It was later re-equipped with Bf 109G-6s. The unit had also one captured Hawker Hurricane Mk.IIA in its possession, but it never flew any operational sorties.