John Grierson (2 January 1909 – 21 May 1977) was an English long-distance flier, test pilot, author, and aviation administrator.

In the same aircraft he established a record in 1931 with a 41½-day flight from Karachi, India to Lympne, England, and in 1932 flew 8,800 miles across the USSR to Samarkand.

[6] As a Wing Commander after World War II he was Deputy Director of Civil Aviation in the British Zone of Occupied Germany.

He was a member of the Council of the Royal Geographical Society and Britain's representative on Operation Deep Freeze in Antarctica in 1966.

He died just after speaking at the Smithsonian's Air and Space Museum's symposium on the fiftieth anniversary of Lindbergh's solo New York to Paris flight.