William Sears

• William Sears (Baháʼí), American author, sportscaster and prominent member of the Baháʼí Faith
• William Sears (physician), American pediatrician and author
• William Sears (politician), Irish politician
• William J. Sears, U.S. Representative from Florida
• William R. Sears, American aerodynamicist
• William R. Sears (New [York politician)], New York politician