Abu'l-'Anbas Saymari Mohammad bin Eshaq bin Abi'l-'Anbas bin Al-Maghira bin Mahan^[1] (Persian: ابوالعنباس صیمری; Arabic: أبو العنبس محمّد بن إسحاق بن إبراهيم الصيمري) was an Iranian astrologer, astronomer, 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 – 861) to Moʿtamed's (870 – 892). His great-great-grandfather's name, and his knowledge of the Sasanian astrologers Zaradūšt and Bozorjmehr, indicates that he was of Iranian origin.^{[citation needed]}

• Ketāb al-radd ʿala’l-monaǰǰemīn (Book of the Refutation of Astrologers), lost;
• Ketāb aḥkām al-noǰūm (Book of Judgements of the Stars), lost;
• Ketāb al-madḵal elā ṣanāʿat al-tanǰīm (Book of the Introduction to the Art of Astrology), perhaps identical with no. 5;
• Ketāb al-mawālīd (Book of Nativities), lost;
• Ketāb al-madḵal elā ʿelm al-noǰūm (Book of the Introduction to the Science of the Stars);
• Ketāb fi’l-ḥesāb al-noǰūmī (Book on Stellar Computation);
• Al-Zīǰ.