William Lord may refer to:

• William Lord (Medal of Honor) (1841–1915), American army musician and Medal of Honor recipient
• William Barry Lord (19th century), British army veterinary surgeon and writer
• William Paine Lord (1838–1911), American politician from Oregon
• William T. Lord (born c. 1955), American air force officer
• William A. Lord (1849–1927), Vermont lawyer and politician
• William Lord (cricketer) (1873–1906), English cricketer

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