In February, Gaga, 26, was forced to cancel the remainder of her "Born This Way" US tour due to a labral tear of her right hip, which left her unable to walk.
Gaga will make her long awaited return during Beyonce's Mrs Carter world tour, when it reaches New York in the summer, reported Sun online.
An email was reportedly sent by concert listings website Songkick describing that Gaga had been lined up to perform with Beyonce on August 3.
Beyonce and Gaga collaborated back in 2010 for the hit song "Telephone," which Gaga had originally written for pop star Britney Spears.