Aaro Olavi Pajari (17 July 1897 – 14 October 1949) was a Major General in the Finnish Army.

Pajari went on to serve throughout the Winter, Continuation, and Lapland wars, becoming famous for his success in leading small unit, and guerrilla style operations.

In 1917 he joined the White Guard and participated in the Finnish Civil War as a company commander.

Pajari led the first Finnish successful mission in the Winter War by defeating the Soviet Union 139th Division in Battle of Tolvajärvi.

During Soviet strategic Karelian offensive June 1944 Pajari commanded the 3rd division during major battles at two Finnish defensive lines (VT-asema, VKT-asema).

[1] At the Lapland War General Major Pajari commanded 3rd division during conquest of Tornio (in northern Finland) from Nazi Germany in the beginning of October 1944.