Romanos I Lekapenos (or Romanus I Lecapenus) (Greek: Ρωμανός Α΄ Λακαπήνος, Rōmanos I Lakapēnos; Armenian: Ռոմանոս Ա Լակապենոս, Romanos I Lakapenos) (circa 870 – June 15, 948) was Byzantine Emperor from 920 until his deposition on December 16, 944.

Romanos Lekapenos, the son of an Armenian peasant Although he did not receive any refined education (for which he was later abused by his son-in-law Constantine VII), Romanos advanced through the ranks of the army during the reign of Emperor Leo VI the Wise. In 911 he was general of the naval theme of Samos and later served as admiral of the fleet (droungarios tou ploimou). In this capacity he was supposed to participate in the Byzantine operations against Bulgaria on the Danube in 917, but he was unable to carry out his mission. In the aftermath of the disastrous Byzantine defeat at the Battle of Acheloos in 917 by the Bulgarians, Romanos sailed to Constantinople, where he gradually overcame the discredited regency of Empress Zoe Karvounopsina and her supporter Leo Phokas.