MotoGP has extended its agreement with Silverstone, which stages the race, to cover the 2027 and 2028 seasons.
The British Grand Prix returned to Silverstone, which also hosts Formula 1 races, after a 24-year absence in 2010.
This year's British race will take place on Sunday - the 12th of 22 races in the MotoGP season.
"This extension underscores our commitment to two-wheel racing," said Silverstone chief executive Stuart Pringle.
"This renewed partnership secures our place as the undisputed home of elite international racing."
Carmelo Ezpeleta, chief executive of MotoGP Group, added: "The UK has a rich motorcycle racing heritage and remains one of the most important markets for MotoGP.
"Silverstone provides a fantastic stage for MotoGP, 11 different winners in the last 11 Grands Prix hosted at the circuit is a testament to the quality, competitiveness and unpredictability of racing at the circuit."