Abu Sa'id Masrur ibn al-Walid ibn Abd al-Malik (أبو سعيد مسرور بن الوليد بن عبد الملك) was an Umayyad prince and governor of Jund Qinnasrin (military district of northern Syria) during the reign of his brother, Caliph Yazid III (r. 744–744).
He played a role in the Third Muslim Civil War as a commander for Yazid III against rebels from Homs.
They encamped at nearby Huwwarin, whereupon their cousin, Sulayman ibn Hisham, took command of the troops.
[5] The caliph died before the end of the year and was succeeded by another half-brother of Masrur, Ibrahim, whose rule was opposed by a distant Umayyad relative, the powerful general of the Jazira, Marwan II.
When he came upon Qinnasrin, its sympathetic troops surrendered Masrur and Bishr to Marwan II, who had them imprisoned.