Alhaji Sir Usman Nagogo dan Muhammadu Dikko was Emir of Katsina from 19 May 1944, until his death. A Fulani from the Sullubawa Clan, he succeeded his father, Muhammadu Dikko, as Emir, and was succeeded by his son, Muhammadu Kabir Usman.

Alhaji Muhammadu Dikko also known as Muhammad Dikko dan Gidado, was the 47th Emir of Katsina from 9 November 1906 until his death in 1944. He was the ninth Fulani emir, as well as the first emir from the current ruling Sullubawa dynasty, succeeding Yero dan Musa, the last emir from the Dallazawa dynasty which was installed by the Jihad of Usman dan Fodio. He came to power shortly after British rule began in 1903 following the signing of a treaty between the then Emir, Abubakar dan Ibrahim, and British officials. He was a brother to Binta the paternal grand mother of Shehu Musa Yar'adua and Umaru Musa Yar'adua, he was succeeded by his son Usman Nagogo who held the title of Emir from 1944 until his death in 1981. He and his entourage were photographed on multiple occasions.