Alasdair Mac Colla (c. 1610–1647) was a Scottish soldier. His full name in Scottish Gaelic was Alasdair Mac Colla Chiotaich Mac Domhnuill (). He is sometimes mistakenly referred to in English as "Collkitto", a nickname that properly belongs to his father. He fought in the Wars of the Three Kingdoms, most notably in Scotland, where he became a knight. He died at the Battle of Knocknanauss in 1647.