John Delaval

John Delaval may refer to:

• Sir John Delaval, 3rd Baronet (1654–1729), English MP for Morpeth and Northumberland
• John Delaval, 1st Baron Delaval (1728–1808), British peer and MP for Berwick-upon-Tweed
• John Delaval Carpenter, 4th Earl of Tyrconnell (1790 - 1853)