Ebba Gustavsdotter Stenbock (c. 1550 – 8 March 1614,[1][2] in Sweden) was a Swedish noble. She led the defense of the stronghold Turku Castle for the loyalists of Sigismund III Vasa during the siege by Charles IX of Sweden in succession of her spouse Clas Eriksson Fleming (1530–1597), governor of Finland. The sister of queen Katarina Stenbock, she married Clas Eriksson Fleming (1530–1597), governor of Finland, in 1573.[3][1][4]