Aksel Fredrik Airo (14 February 1898 – 9 May 1985) was a Finnish lieutenant general and main strategic planner during the Winter War and the Continuation War. He was the virtual second-in-command of the Finnish army under Field Marshal C.G.E. Mannerheim. He was born in Turku. As a young man he became a supporter of Finnish independence. His father changed the original, Swedish, family name Johansson to Airo (lit. "oar").