William H. Bell may refer to:

• William Bell (photographer) (1830–1910), English-born American photographer
• William H. Bell (Wisconsin politician) (1863–?), member of the Wisconsin State Assembly
• William Henry Bell (1873–1946), composer
• William Henry Bell (businessman), businessman and politician in Hong Kong
• William Henry Dillon Bell (1884–1917), New Zealand politician
• William H. Bell (fl. 1860s) witness to assaination attempt on William Seward.

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