No. 12 Squadron (Finnish: Lentolaivue 12 or LLv.12, from 3 May 1942 Le.Lv.12), renamed No. 12 Reconnaissance Squadron (Finnish: Tiedustelulentolaivue 12 or TLe.Lv.12 on 14 February 1944) was a reconnaissance squadron of the Finnish Air Force during World War II. The squadron was part of Flying Regiment 1.

Organization

Winter War

• 1st Flight (1. Lentue)
• 2nd Flight (2. Lentue)
• 3rd Flight (3. Lentue)
• Separate Detachment Salo (Erillisosasto Salo)
• 3rd Flight of No. 14 Squadron (3./LLv. 14, temporary detached in December 1939)

The equipment consisted of 13 Fokker C.Xs, 6 Gloster Gladiators, and 1 Westland Lysander.

Continuation War

• 1st Flight (1. Lentue) the unofficial flight emblem "Chief Devil Himself" was carried by the Curtiss Hawk 75A aircraft of 1./LLv.12 in 1941. The "Ramming Ram" unit emblem was carried by the aircraft of 1./Le.Lv.12 between 1942 and 1943
• 2nd Flight (2. Lentue) the unofficial flight emblem "Merry Donkey" was carried by the aircraft of 2./Le.Lv.12 between 1942 and 1943
• 3rd Flight (3. Lentue)

The equipment consisted of 6 Fokker C.Xs, 3 Gloster Gladiators, 4 Curtiss Hawk 75As, 12 Fokker D.XXIs, and 4 Blackburn Ripon IIs. By the end of the war the unit also received 20 VL Myrsky IIs, 2 Bristol Blenheim Mk.Is, and 2 Polikarpov U-2s.