Sir William Henry Power, KCB, FRS (15 December 1842 – 28 July 1916) was a British medical doctor.

In January 1900, Power was appointed Chief Medical Officer of England, and served as such until 1908.

In 1898 Power was awarded the first Jenner Memorial Medal of the Epidemiological Society of London.

[6] Power died at Holly Lodge, East Molesey, Surrey, in 1916.

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