The 2017 iHeartRadio Much Music Video Awards (or simply the iHeartRadio MMVAs) were held on June 18, 2017, outside 299 Queen Street West in Toronto, Canada. It was hosted by Joe Jonas and Alessia Cara. Initial announcements were made on April 26, 2017. This is the final ceremony to be held in June and on Father's Day.

Highlights of the broadcast included a red carpet ceremony where Marianas Trench marked their 10th and final year at the MMVAs by arriving covered in dozens of colourful balloons. Lead singer Josh Ramsay emerged from a cardboard cake dressed in a faux whip cream bikini.

During the opening monologue Joe Jonas, who hosted the show eight years earlier with the Jonas Brothers, referenced the pending legalization of marijuana in Canada saying, "This time next year it will be completely legal for Canadians to be blem for real,'' referring to the Drake song "Blem" which uses slang for getting high.

The broadcast also had recurring themes of diversity and acceptance brought up by numerous presenters and winners. When indigenous group A Tribe Called Red won video of the year for "R.E.D.'' guest rapper Narcy spoke out about representation. He told the crowd,

To all the black, brown, indigenous, immigrant, international kids out there: believe in your dreams, make it happen.

Wildcard nominees were announced on May 3, 2017. The full list of nominees was published on May 18, 2017.

A Tribe Called Red (featuring Yasiin Bey, Narcy & Black Bear) — "R.E.D."

Sleepy Tom (featuring Tonye) — "Seeing Double" (Post-production: Matt Bilewicz, Zhargal Sambuev, Farah Yusuf, Sean Evans, Ryan Ruskay & Fezz Stenton)