Othman Kalinuama

Uthman III (ʿUthmān bin Dāwūd ), called Uthman Kalinumuwa and Kalinwama. and Uthman Daudumi, was briefly mai (ruler) of the Kanem–Bornu Empire in the early 15th century, ruling approximately 1422–1423. (Different king lists (girgams) and chronicles translated in the 19th–20th centuries assign Uthman a reign of 0 years (Palmer), 9 months (Barth), and 1 year (Urvoy).) He is omitted in the regnal lists of Landeroin and Nachtigal. Stewart dated it to 1432–1433, and Bosworth (2012) dated it to 1422–1423. Uthman fled from the country and sought refuge among the Hausa states, probably in the Kingdom of Kano. Uthman was succeeded as mai with Dunama IV, a nephew of Biri III.

Uthman probably died in his place of exile, presumably Kano. The site of his death has also alternatively been recorded as "Bursulum".