Hosted by Ryan Seacrest, the mega-concert and prize presentation is to air live on Turner's TBS, TNT and truTV at 8 p.m. ET/5 p.m. PT from the Forum in Los Angeles.
"The biggest artists in music show up each year," Seacrest said in a statement. "iHeartRadio reaches hundreds of millions of people across the country every day, so this is an opportunity for the fans to have a voice in who's the best and brightest, and the artists, in turn to show their appreciation. It's always a lively celebration and an evening of special performances and appearances."
"2016 was an incredible year in music and the iHeartRadio Music Awards will not only recognize the amazing artists of the past 12 months, but celebrate their success, creativity and innovation," added Tom Poleman, president of the national programming group for iHeartMedia. "As a pop-culture icon, Ryan Seacrest is a known champion of great music across our radio stations nationwide. We're thrilled to have him as our master of ceremonies."