Yusif Bahlul oglu Yusifov (Azerbaijani: Yusif B?hlul oglu Yusifov, Russian: ???´? ?????´? ????´ ???´???; 23 September 1929 – 4 January 1998) was an Azerbaijani and soviet historian, linguist, toponymist, orientalist, turkologist and an outstanding authority on ancient languages, including Sumerian and Akkadian.