Sir Cecil Clementi Smith GCMG (23 December 1840 – 6 February 1916), was a British colonial administrator.
The son of an Essex rector, John Smith, and his wife Ceceilia Susanna Clementi (daughter of Muzio Clementi), Cecil Clementi Smith received his education at St Paul's School and Corpus Christi College, Cambridge. In 1864 he began his civil service career as a cadet interpreter in Hong Kong, learning much about the Chinese culture and gradually became an accomplished scholar of the Chinese culture. He was also the Colonial Treasurer of Hong Kong.
In 1878 Clementi Smith took office in Singapore as a Colonial Secretary in the Straits Settlements, and understudied Governor Frederick Weld. His knowledge of Chinese culture and competence in the language proved useful as he was able to communicate effectively with leaders of the growing Chinese community. He became known for his effective work in quelling Chinese secret societies in the Straits Settlements, such as those in Singapore which had been terrorising locals for decades. He also established the Queen's Scholarships in 1889 to fund bright Singaporean students to further their studies in top British universities.