John Parnell
John Parnell may refer to:
- John Parnell (1680–1727), Irish MP for Granard 1713–22
- Sir John Parnell, 1st Baronet, Irish M.P. for Maryborough
- Sir John Parnell, 2nd Baronet, Irish M.P. for Queen's County 1783–1801
- John Parnell, 2nd Baron Congleton, British missionary in Turkey and India
- John Parnell (cricketer), Irish-born English cricketer with amateur status
- John Howard Parnell, Parnellite Nationalist MP for South Meath
- Jack Parnell, English bandleader and musician
- John A. Parnell, professor of management at the University of North Carolina, Pembroke