Dimitrios Matthaiopoulos (Greek: Δημήτριος Ματθαιόπουλος, 1861–1923) was a senior Hellenic Army officer who participated in the Balkan Wars of 1912–1913.

[2] During the mobilization before the outbreak of the First Balkan War, Matthaiopoulos was placed as CO of the 5th Infantry Division, newly formed from reservists.

During the war, he was tasked with covering the left flank of the Army of Thessaly through his division's advance into Western Macedonia.

Dismissed from his command, he was placed in charge of the 8th Infantry Division in the Army of Epirus, with which he participated in the Battle of Bizani where he was wounded.

During the Second Balkan War, the 8th Infantry Division under Matthaiopoulos conducted an amphibious operation which resulted in the Greek annexation of Western Thrace.