The Lavochkin-Gorbunov-Gudkov LaGG-3 (Лавочкин-Горбунов-Гудков ЛаГГ-3) was a Soviet fighter aircraft of World War II. It was a refinement of the earlier LaGG-1, and was one of the most modern aircraft available to the Soviet Air Force at the time of Germany's invasion in 1941. Overweight despite its wooden construction, at one stage 12 LaGG-3s were being completed daily and 6528 had been built when factory 31 in Tbilisi switched to Yak-3 production in 1944.