Karimu Kotun was a Nigerian businessman and trade ambassador who was involved in trade across the Nigerian landscape during the dawn of the twentieth century. He was born in Lagos in 1881, and was the second son of Braimah Kotun. He started his business venture in 1896 after completing his studies. He was mostly invovled in trading Cotton and was successful in the business leading to his appiontment as agents for two British firms in Liverpool and Manchester. He later left the services of the firms and worked on his own account as an independent trader.
Karimu Kotun was also the president of the Muslim Cricket Club in Lagos and President of the Alowolagba Society. In 1919, he succeeded Aldolphus Martins as the private secretary of the Oba of Lagos, Eshugbayi Eleko.