Admiral of the Fleet Sir John Norris PC (1670 or 1671 – 13 June 1749) was a Royal Navy officer and Whig politician.

Norris served under Admiral Sir George Rooke at the Battle of Cádiz at an early stage of the War of the Spanish Succession.

As a flag officer, Norris was sent with a fleet to the Baltic Sea to support a coalition of naval forces from Russia, Denmark and Hanover taking in the Great Northern War.

Tsar Peter took personal command of the coalition fleet and appointed Norris as his deputy in 1716: together they protected British and other allied merchant vessels from attack by warships of the Swedish Empire.

In November 1718, following the death of Charles XII of Sweden, Britain switched sides and Norris returned to the region to protect British merchant shipping from attack by Russian raiders.

[3] After taking part in the British defeat at the Battle of Toulon in July 1707 and, while sailing aboard his flagship HMS Torbay, Norris was present during the great naval disaster off the Isles of Scilly in October 1707 when Shovell and four of his ships were lost, claiming the lives of nearly 2,000 sailors.

[6] While still serving as second-in-command of the Mediterranean Fleet, he took personal charge a squadron deployed to the Baltic Sea to prevent Swedish grain arriving in France in 1709.

[7] He was sent with a fleet to the Baltic Sea to support a coalition of naval forces from Russia, Denmark and Hanover taking in the Great Northern War.

[3] Tsar Peter took personal command of the coalition fleet and appointed Norris as his deputy in 1716: together they protected British and other allied merchant vessels from attack by warships of the Swedish Empire.

[8] In November 1718, following the death of Charles XII of Sweden, Britain switched sides and Norris returned to the region to protect British merchant shipping from attack by Russian raiders.

[12] and was appointed Vice-Admiral of Great Britain in April 1739[13] and went on to be Commander-in-Chief of the Channel Fleet at the outset of the War of Jenkins' Ear in Autumn 1739.

[9] Norris died at his country home, Hemsted Park in Kent, on 13 June 1749 and was buried at St George's Church in Benenden.