The 2014 Speedway Grand Prix of Great Britain, sponsored by MITAS, was the seventh round of the 2014 Speedway Grand Prix season. It took place on 7 July at the Millennium Stadium in Cardiff, Wales.
It was the 20th Speedway Grand Prix of Great Britain.
The Speedway Grand Prix Commission nominated Craig Cook as Wild Card, and Ben Barker and Jason Garrity both as Track Reserves.
The Grand Prix was won by United States rider Greg Hancock (his 18th career Grand Prix win), who beat Tai Woffinden and Darcy Ward in the final.