Hamman Bello Ahmed (also referred to in sources as Hamman Bello Ahmed Kojoli and Hamman Ahmad), OFR (3 January 1949 – 26 January 2022), was a Nigerian customs officer, philanthropist and politician. He served as the comptroller general (CG) of the Nigeria Customs Service from 2008 to 2009 by Umaru Yar Adua. He was replaced by B. E. Nwadialo; prior to becoming the CG of Customs, he was the Assistant CG of Customs at the Abuja headquarters.