The coffee chain will replace Asos.com as headline backer of the Global Radio station’s “Summertime Ball”.
Frappuccino branding will appear on event tickets and programmes as well as in radio trailers.
The sponsorship also includes a competition inviting Starbucks customers to send a video audition to win the chance to perform on stage with one of the acts due to perform at the Summertime Ball.
Starbucks is also promoting its Frappuccino through cinema advertising, experiential, sampling, digital and PR activity.
The acts for this year’s gig have not yet been announced. Last year’s event featured Rihanna, Usher and Cheryl Cole.
The range of Frappuccinos launches on 5 May.