Abu'l-'Anbas Saymari Mohammad b. Eshaq b. Abi'l-'Anbas b. Al-Maghira b. Mahan (ابوالعنباس صیمری) was an Iranian astrologer, poet and author. He was born in 213/828 in Kufa, and died in 275/889. He seems to have spent much of his time at the caliphal court from Motawakkel’s reign (847-61) to Moʿtamed’s (870-92). His great-great-grandfather’s name, and his knowledge of the Sasanian astrologers Zaradūšt and Bozorjmehr, indicates that he was of Iranian origin.