John St Aubyn
John St Aubyn may refer to:
- John [St Aubyn (sheriff)], Sheriff of Cornwall, 1568
- John St Aubyn (Member of the Addled Parliament), MP for Cornwall (UK [Parliament constituency)|Cornwall], 1614; MP for Mitchell, 1621
- John St Aubyn (Parliamentarian) of Clowance, MP for Tregony, 1640; Cornwall, 1656; St Ives, 1659,1660
- Sir John St Aubyn, [1st Baronet], MP for Mitchell (UK Parliament constituency)
- Sir John St Aubyn, 2nd Baronet, MP for Helston (UK Parliament constituency)
- Sir John St Aubyn, 3rd Baronet
- Sir John St Aubyn, [4th Baronet], MP for Grampound (UK Parliament constituency)
- Sir John St Aubyn, [5th Baronet]
- John St Aubyn, 1st [Baron St Levan]
- John St Aubyn, 4th Baron St Levan