John Colthurst

John Colthurst may refer to:


 * John Colthurst (1678–1756), MP for Tallow (Parliament of Ireland constituency) 1734–1756
 * Sir John Colthurst, 1st Baronet (died 1775), MP for Castlemartyr, Youghal and Doneraile
 * Sir John Conway Colthurst, 2nd Baronet (c. 1743–1787), of the Colthurst baronets