Sabinianus Magnus (Greek: Σαβινιανός ό Μέγας; died 481) was a general of the Eastern Roman Empire, who fought in the rebellion of Theodoric Strabo against Emperor Zeno.
He hampered the negotiations between Theodoric and Adamantius, refusing to swear that the hostages exchanged would be safe from harm, officially for religious reasons, but actually because he opposed the reconciliation policy with the Goths.
In fact, as the negotiations went on, he decided to attack the Goths: moving with his army at the back of the enemy, he succeeded in killing many of them and in capturing a great part of their baggages.
Once he had returned to Lychnidus, he obtained the support of the Praetorian prefect of Illyricum, Iohannes, and successfully suggested the Emperor to reject the truce signed with Theodoric and to keep fighting him.
Sabinianus' presence in Illyricum along with the Gothic soldier Gento, prevented Theodoric from pillaging that territory (479), but later he fell out of favour at court, and Emperor Zeno executed him.