Carl Johan Korsman (14 June 1829 — 24 May 1907) was a Finnish shipowner and military officer. Korsman joined in the military in 1846; he served in infantry and resigned in 1868 as captain. In 1869 Korsman started shipping business first in coastal shipping, later in liner shipping operating from Turku to Stockholm and Saint Petersburg. He became a significant operator in 1878 when he started winter season shipping between Hanko and Stockholm. Korsman laid the basis to the Finnish winter season shipping together with captain . Korsman retired in 1895 and moved to Helsinki, where he died in 1907.