ABUABDULLOHI KhORAZMI maruf ba Abuabdulloh Muhammad ibni Yusuf Kotibii Khorazmi (910, Balkh – 1009, Khorazm), olim, musiqashinos, tarikhnigori fors-tojik. Abuabdullohi Xorazmi dar zodgohash Balkh ilmhoi mamuli zamonashro omukhta, baroi takmili donish ba Nishopur raftaast. Dar on jo faoliyati ilmiyu adabii u inkishof yofta, dar ilmhoi falsafa, bade, musiqi, riyoziyot, falaqiyot va gayra donishu malakai tamom hosil kardaast.
Uro Nukh ibni Nasri Somoni (hukmronii 943 – 954) ba darbor davat mekunad va faoliyati ilmiyu adabiash asosan dar Bukhoro vusat meyobad. Asarash «Mafoteh-ul-ulum» («Kalidi ilmho»)-ro dar Bukhoro ba zaboni arabi navishta ba Nasr ibni Ismoili Somoni bakhshidaast, ki bo nomi «Qomus»-i Yusufi Khorazmi niz mashhur ast. Abuabdullohi Xorazmi dar okhiri umrash ba Khorazm rafta, dar on cho to okhiri umr zistaast va takhallusi «Khorazmi»-ro intikhob kardanash niz az ha- min jost.
Merosi ilmiyu adabii Abuabdullohi Xorazmi khele gani meboshad. U aksari dastovardkhoi farhangii zamoni khudro dar «Mafoteh-ul-ulum» bayon kardaast. Donishmandi eroni Husayni Khidevi Jam kitobi «Mafoteh-ul-ulum»- ro ba zaboni forsi tarjuma kard, ki on soli 1969 ba tavassuti Intishoroti bunyodi farhangi Eron (chopkhonai Khoja, Tekhron), ba tab rasid. U. Toirov