The 36-year-old from Hampshire narrowly edged Ryder Cup teammate Henrik Stenson during a tense final round on the sport’s return to the Olympics to take the men’s individual strokeplay.
World number 12, Rose, wrote his name into the history books earlier in the tournament after carding the first ever hole-in-one in Olympic history.
Speaking after the event, he said: “Today proved to be a great final, and a great final round.”
“It’s something I’ve focused on, it’s something that I’ve been hungry for, it’s something that I wanted to peak for. It’s been at the very forefront of my mind in the last few months for sure.”
Experienced Olympian Jason Kenny beat GB team-mate Callum Skinner to win gold in the cycling sprint final.