Otto Heinze VR I/2, VR II/3 (March 11, 1877 in Kotly, Saint Petersburg Governorate – June 8, 1968 in Bad Windsheim, West Germany) was an Estonian military commander during the Estonian War of Independence.
Heinze joined the Russian army voluntarily in 1905 after graduating from the Oranienbaum Military School.
In the Estonian War of Independence, Heinze became commander of the 1st Infantry Regiment.
After the war Heinze worked in the Ministry of Defence and was twice commander of 1st Division.
In 1941 he moved to Germany (his wife had German ancestry) to avoid Soviet repressions.