The player from Westmount, Que., is ranked a career-high 12th, up from No. 16.
Russia's Maria Sharapova moved up three spots to No. 5 after winning the women's title in Paris on the weekend.
No. 1 Serena Williams and No. 2 Li Na didn't move despite early French Open losses, while runner-up Simona Halep rose one spot to No. 3.
On the men's side, Milos Raonic of Thornhill, Ont., who made the quarter-finals at Ronald Garros, remained in ninth spot.
Spain's Rafael Nadal held onto the No. 1 ranking thanks to his ninth French Open title.
If Nadal had lost Sunday's final to No. 2 Novak Djokovic, they would have swapped places in the ATP rankings.
No. 3 Stan Wawrinka and No. 4 Roger Federer also stayed put, but Andy Murray climbed from No. 8 to No. 5 by reaching the French Open semifinals. First-time major semifinalist Ernests Gulbis jumped seven places to a career-best No. 10.
— With files from The Canadian Press
Note to readers: This is a corrected story. A previous version incorrectly had Raonic reaching the French Open semifinals.