Al-Nu'man I ibn Imru' al-Qays (Arabic: النعمان بن امرؤ القيس), surnamed al-A'war (الأعور, "the one-eyed") and al-Sa'ih (السائح, "the wanderer/ascetic"), was the king of the Lakhmid Arabs (reigned ca. 390–418).
Nu'man was the son of Imru' al-Qays II ibn 'Amr and followed his father on the throne. He is best known for his construction of two magnificent palaces, the Khawarnaq and Sadir, near his capital al-Hirah, which were accounted by contemporary Arab lore among the wonders of the world. The Khawarnaq was built as a resort for his overlord, the Sasanian Persian shah Yazdegerd I (r. 399–420) and his son Bahram V (r. 420–438), who spent his childhood years there.
According to later Arab tradition, he renounced his throne and became an ascetic, after a reign of 29 years. He is also reputed to have visited the Christian hermit Symeon the Stylite between 413 and 420. He was succeeded by his son al-Mundhir I (r. 418–452), who played an important role by assisting Bahram V in claiming his throne after Yazdegerd's death and by his actions in the Roman–Sasanian War of 421–422.