Roger Federer said on Tuesday he will miss the remainder of the season, including next month's Olympic Games in Rio, as the 17-time Grand Slam champion recovers from a knee injury.

Federer, who turns 35 in August, underwent knee surgery in February before missing May's French Open with a back problem, and the Swiss star said he was calling time on his 2016 season to focus on his recovery.

"I'm extremely disappointed to announce that I will not be able to represent Switzerland at the Olympic Games in Rio and that I will also miss the remainder of the season," Federer said on his Facebook page.