Theodoric II (died 30 December 1115), called the Valiant, was the Duke of Lorraine from 1070 to his death.

In fact, Sophia, the daughter of Duke Frederick II of the House of Ardennes, who had inherited the counties of Bar and Montbéliard, had a husband named Louis, who contested the succession.

Soon Louis was dead, but his son, Theodoric II of Bar, claimed the succession anyway.

In 1095, he planned to take up the Cross (i.e., go on Crusade, specifically the First), but his ill health provoked him to drop out, nevertheless convincing his barons to go east.

His first wife was Hedwig (died 1085 or 1090),[2] daughter of Frederick, count of Formbach.