John Parnell

John Parnell may refer to:
 * John Parnell (1680–1727), Irish MP for Granard 1713–22
 * Sir John Parnell, 1st Baronet (c. 1720–1782), Irish M.P. for Maryborough
 * Sir John Parnell, 2nd Baronet (1744–1801), Irish M.P. for Queen's County 1783–1801
 * John Parnell, 2nd Baron Congleton (1805–1883)
 * John Parnell (cricketer) (1811–1859), Irish-born English cricketer with amateur status
 * John Howard Parnell (1843–1923), Parnellite Nationalist MP for South Meath
 * John Parnell Thomas (1895–1970), stockbroker and politician
 * Jack Parnell (John Russell Parnell, 1923–2010), English bandleader and musician
 * John A. Parnell (born 1964), professor of management at the University of North Carolina, Pembroke