John Wallop (disambiguation)

Sir John Wallop (c. 1490–1551) was an English soldier and diplomat.

John Wallop may also refer to:
 * John Wallop, 1st Earl of Portsmouth (1690–1762), British peer and Member of Parliament
 * John Wallop, 2nd Earl of Portsmouth (1742–1797), British nobleman
 * John Wallop, 3rd Earl of Portsmouth (1767–1853), British nobleman and lunatic
 * John Wallop (died 1405), MP for Salisbury
 * John Wallop, Viscount Lymington (1718–1749), British politician