Andō Nobumasa (安藤 信正, January 10, 1819 – November 20, 1871) was a late-Edo period Japanese samurai, and the 5th daimyō of Iwakitaira Domain in the Tōhoku region of Japan, and the 10th hereditary chieftain of the Andō clan. He was the eldest son of Andō Nobuyori and his mother was a daughter of Matsudaira Nobuakira of Yoshida Domain. His childhood names were Kinnoshin and Kinnosuke and he was known most of his life as Andō Nobuyuki, taking the name of Nobumasa only after he became a rōjū.