The 2018 iHeartRadio Music Awards were held on March 11, 2018 at The Forum in Inglewood, California. The list of nominations was announced on January 10, 2018. DJ Khaled and Hailey Baldwin hosted the ceremony. TBS, TNT, and truTV broadcast the ceremony in the United States, while the red carpet was broadcast live on the network's social media pages. The telecast aired following the 2018 NCAA Selection Show on TBS. Taylor Swift premiered the music video for her single "Delicate" at the show. 2018 marked the show's final simulcast on TBS, TNT, and truTV, as it returned to broadcast television the following year, and aired on new partner network FOX for the first time.
| 2018 iHeartRadio Music Awards | |
|---|---|
 | |
| Date | March 11, 2018 |
| Location | The Forum, Inglewood |
| Country | United States |
| Hosted by | DJ Khaled and Hailey Baldwin |
| Most awards | Ed Sheeran (4) |
| Most nominations | Luis Fonsi and Daddy Yankee (7 each) |
| Television/radio coverage | |
| Network | TBS, TNT, and truTV |
| Runtime | 96 minutes |
Performances
The following performed at the show:
| Artist(s) | Song(s) |
|---|---|
| Cardi B G-Eazy | "Bartier Cardi" "MotorSport" "No Limit" "Finesse" "Bodak Yellow" |
| Ed Sheeran | "Perfect" (live from Melbourne, Australia) |
| Camila Cabello Young Thug | "Havana" |
| Maroon 5 | "Wait" |
| Eminem Kehlani | "Nowhere Fast" |
| Bon Jovi | "It's My Life" "You Give Love a Bad Name" |
| Charlie Puth | "How Long" |
| N.E.R.D | "Lemon" |
Winners and nominees
iHeartRadio presented the winners of seven categories in the seven days leading up to the Sunday telecast. Winners are highlighted in boldface.