Marjorie Bruce or Marjorie de Brus (1296 – 2 March 1316) is the eldest daughter of Robert the Bruce, King of Scots by his first wife, Isabella of Mar, and the founder of the Stewart dynasty.

Her marriage to Walter, High Steward of Scotland gives rise to the House of Stewart.

Her son is the first Stewart monarch, King Robert II of Scotland.

Her widowed father later marries Elizabeth de Burgh.