Top-ranked Serena Williams of the United States is the top women's seed and world No. 1 Novak Djokovic of Serbia is the top men's seed. The women will play Aug. 1-10 at Uniprix Stadium in Montreal and the men will play Aug. 2-10 at Rexall Centre in Toronto.
The seedings follow the official ATP World Tour and WTA rankings released Monday. Each tournament features 15 of the top-16 ranked players.
The top eight seeds in each draw will receive first-round byes. Williams won the women's tournament last year while Spain's Rafael Nadal beat Raonic, from Thornhill, Ont., in the men's final.
Nadal is seeded second this year, ahead of Roger Federer and Stan Wawrinka of Switzerland and Czech player Tomas Berdych. The women's top five is rounded out by Li Na of China, Petra Kvitova of the Czech Republic, Agnieszka Radwanska of Poland and Russia's Maria Sharapova.
World No. 8 Juan Martin Del Potro has withdrawn due to his ongoing recovery from wrist surgery. Wimbledon semifinalist Grigor Dimitrov of Bulgaria replaces him as the No. 8 seed and will get a first-round bye.
Bouchard, from Westmount, Que., reached her first Wimbledon final earlier this month before losing to Kvitova. Raonic reached the men's semifinals at the All England Club before falling to Federer, who lost to Djokovic in the final.
The Rogers Cup tournament draws will be held Friday.