Andy Murray has been named Great Britain's flag-bearer for the opening ceremony of the 2016 Olympic Games at the Maracana Stadium in Rio de Janeiro on Friday night.
Murray weathered competition from Sir Bradley Wiggins, Nicola Adams and David Florence to become the first tennis player to land the honour.
"I am very proud to be selected," Murray said in a statement. "To represent your country at the Games is an unbelievable experience, but to lead out Team GB will be an incredible honour, the biggest in sport.
He clinched men's singles gold at the London 2012 Games as well as silver in the mixed doubles alongside Laura Robson.
Murray, 29, was the choice of a panel of British Olympic Association experts, who picked from nominations made by each of the respective national sports federations.
The Scot will head a British team of 366 competitors, although a sizeable proportion of the athletes are yet to arrive in Brazil.
Murray added: "This is my third Olympic Games and it is a very special competition for me. I obviously have great memories of London and I am 100 percent focused on winning here in Rio.
"The privilege of being the flag-bearer is a moment I will remember for the rest of my life and will certainly be one of the highlights of my career. I hope to do the team proud on Friday and wish all of the British athletes the best of luck for the Games ahead."
Murray, who won Wimbledon for a second time last month, follows in the footsteps of fellow Scot Sir Chris Hoy, with the cyclist leading out Team GB at London 2012.
The team's chef de mission Mark England, who headed the panel for the final selection, said a conversation with Murray convinced him the three-time Grand Slam winner was a worthy choice.
He said: "There are a great number of outstanding athletes on this team, from Nicola Adams who I made flag-bearer in Baku, to Sir Bradley Wiggins, unquestionably one of our greatest ever Olympians.
"When I asked Andy to lead our team out it was received with a humility and grace that is befitting of the values of Team GB. It was an emotional moment for him personally, and for this team.
"I will be incredibly proud to hear him address the team and I have no doubt he will inspire our athletes and the nation alike."
Murray is the second seed in the men's singles, behind world No. 1 Novak Djokovic, who paid tribute to his rival at Serbia's Olympic team news conference.
Djokovic said: "Absolutely deserved. He's globally recognised not just as a tennis player but an athlete. He has done so much for Great Britain, he has won gold and silver in London, he has won [the] Davis Cup.
"I've known him for a very long time and I know how much he cares about playing for his country so being a flag-carrier for the opening ceremony is something that is absolutely deserved for him."