Sir John Norris (c. 1660-1749) was a British admiral of the 17th and 18th centuries, who served as Commander-in-Chief of the Royal Navy under George II.

Norris, whose nickname was "foul-weather Jack", saw a good deal of service during the War of the Spanish Succession under William III and Anne. Under George I he was sent several times with a fleet into the Baltic Sea to forward the king's policy by giving the northern nations some idea of the strength of England. In 1734 he became an admiral and commander-in-chief.

He was a Member of Parliament from 1708 until his death.