John Thomas Godfray Hope Doeg (December 7, 1908 – April 27, 1978) was a male tennis player from the United States.

In August 1929 Doeg won the singles title at the Seabright Invitational defeating Richard Norris Williams in three straight sets.

There was this difference between the three men: Doeg’s service was his chief weapon, and once he had broken through an opponent, he was thought to be certain of winning that set.

In his 1969 memoir Budge observes "John never achieved the greatest stature in the sport because many facets of his game, his ground strokes, for instance, were somewhat lacking," then proclaimed Doeg "one of the most effective servers of all time":[8] The argument about who is the premier server is invariably restricted to include only Tilden, Vines, and Gonzales, but you should have seen Doeg.

He did not hit it quite as hard as Vines, but with that big left-handed move, he came around with a slice that actually knocked the ball lopsided.