Leo Argyros (10th century)

Leo Argyros (Λέων Ἀργυρός) was a Byzantine general active in the first half of the 10th century.

He was the son of the magistros Eustathios Argyros, Drungary of the Watch under Leo VI the Wise (r. 886–912). In c. 910, Leo and his brother Pothos Argyros served under Leo VI as manglabites (personal bodyguards),  when their father was poisoned after falling under Leo's suspicion. The two brothers brought their father's body for burial to their ancestral monastery of Saint Elizabeth in the Charsianon district.

Pothos and Leo both followed military careers. According to Constantine VII Porphyrogennetos, already in 911, Leo, despite his youth, became military governor (strategos) of the theme of Sebasteia with the rank of protospatharios. He then participated in the disastrous campaign against Bulgaria that ended in the Battle of Achelous on 20 August 917. Under Romanos I Lekapenos (r. 920–944), Leo reached the highest offices: he was married to one of the emperor's daughters, Agathe, and attained the ranks of patrikios and eventually magistros. In 922, he participated along with his brother Pothos, who was then Domestic of the Schools, in another heavy defeat against the Bulgarians in the Battle of Pegae. At some point, either c. 922 or after Romanos Lekapenos' fall in 944, he also served as Domestic of the Schools.

Leo Argyros was probably the grandfather or great-grandfather of Emperor Romanos III Argyros (r. 1028–1034).