The 20-year-old from Westmount, Que., jumped from 32nd to fifth in the WTA world rankings this year to become Canada's highest-ranked singles player ever.
She also made the Wimbledon final as well as the semifinals in the Australian Open and French Open.
"I have a great team around me and can't wait to get started,'' said Bouchard, who recently parted ways with coach Nick Saviano.
Bouchard has also been signed by IMG Models with the goal of expanding her presence in the fashion industry.
"Genie's unique combination of talent, mental fortitude, and charisma make her the type of athlete who transcends sport and the unparalleled opportunities and partnerships across WME-IMG in areas including tennis, marketing and modelling will help ensure she reaches a new level of global success," said WME-IMG CEO Patrick Whitesell. "We look forward to working with her to achieve her goals both on and off the court.
Bouchard's management team will include agents from WME and IMG led by Jill Smoller with Brad Slater.