John Lambert
John Lambert may refer to:
- John Lambert (martyr), English Protestant martyred during the reign of Henry VIII
- John Lambert (general), Parliamentary general in the English Civil War
- John Lambert of Creg Clare, Irish soldier and Royalist
- Sir John Lambert, 1st Baronet, French-born English merchant
- John Lambert (politician), U.S. senator from and Acting Governor of New Jersey
- John Lambert (British Army officer), British Army general and cricketer
- John William Lambert, American automotive pioneer
- John Lambert (civil servant), British civil servant
- John Lambert (composer), British composer and teacher
- John Lambert (diplomat), British ambassador
- John Laurence Lambert, Australian educator and author
- John Lambert (naval historian), naval illustrator and author
- Jack Lambert (American football), American football player
- John Lambert (basketball), American basketball player