Crispin Curtis Adeniyi-Jones (1876–1957) was a Nigerian medical doctor of Sierra Leonean heritage and the pioneer director of the Yaba asylum. He became one of Nigeria's foremost nationalist as a member and later president of the Nigerian National Democratic Party. He was also a long-standing member of the legislative council of Nigeria and served in the council from 1923-1938. Apart from his political activities, he also teamed up with Winifred Tete-Ansa of the National Congress of British West Africa to formulate economic policies to alleviate some of the emerging economic problems in colonial West Africa.