Domhnall II, Earl of Mar (date of birth unknown but prior to 1305 – 11 August 1332) was briefly Regent of Scotland during the minority of David II, King of Scotland.
His mother's identity is uncertain, although she seems to have been an elder daughter of Robert Bruce, Earl of Carrick.
[2] It appears likely that he fought on the side of Edward II of England at the Battle of Boroughbridge in March 1322, as it is recorded that afterwards the Earl of Mar took Bartholomew de Badlesmere, who was one of Edward's captured opponents, to Canterbury.
On 2 August Domhnall was elected as the new regent at a meeting of the Scottish nobles at Perth.
He was defeated and killed at the Battle of Dupplin Moor, only nine days after his election as regent.