Host Terry Crews reveals who America has chosen as the Season 21 winner after special guest performances.
| Name | Type | Role | |
|---|---|---|---|
| Rei Ami | Musical Guest | ||
| Josh Groban | Musical Guest | ||
| Steve Aoki | Musical Guest | ||
| Linkin Park | Musical Guest | ||
| Chloe Flower | Musical Guest | ||
| Eric Nam | Guest Star | ||
| Lele Pons | Guest Star |