William Lambert
William Lambert may refer to:
- William Lambert (MP), Member of the Parliament of England
- William Lambert (Australian politician), Australian politician
- William Lambert (cricketer, born 1779), English cricketer
- William Lambert (Middlesex cricketer), English cricketer
- William Frederick Lambert, member of the Queensland Legislative Council
- William Lambert (journalist), American journalist
- William Lambert (mayor), mayor of Richmond, Virginia 1840–1853
- William Lambert (writer), engrosser of the United States Bill of Rights
- William Carpenter Lambert, American World War I ace
- William Lambert (Middlesex cricketer), English cricketer
- William Frederick Lambert, member of the Queensland Legislative Council
- William Lambert (abolitionist), African-American citizen and abolitionist