- Christina Aguilera - Self - Coach
- Cee Lo Green - Self - Coach
- Shakira - Self - Coach
- Usher - Self - Coach
- Pharrell Williams - Self - Coach
- Nick Jonas - Self - Coach
- Ariana Grande - Self - Coach
- Camila Cabello - Self - Coach
- Niall Horan - Self - Coach
- Chance the Rapper - Self - Coach
- Alison Haislip - Self - Backstage, Online and Social Media Correspondent
- Christina Milian - Self - Backstage, Online and Social Media Correspondent
- Snoop Dogg - Self - Coach
- Michael Bublé - Self - Coach
- Reba McEntire - Self - Coach
- Reba McEntire - Self - Mega Mentor
- Dan Smyers - Self - Coach
- Dan Smyers - Self
- Shay Mooney - Self - Coach
- Shay Mooney - Self
- Halsey - Self - Performer
- Jeff Lewis - Self
- Melanie Martinez - Self
- Dominic Scott Kay - Self
- Selena Gómez - Self - Advisor
- Taylor Swift - Self - Mega Mentor
- Luke Johnson - Self - Primary Dancer for Gwen Stefani ft. Eve
- Dia Frampton - Self - Contestant
- Loren Allred - Self - Contestant
- Meghan Trainor - Self - Guest Mentor
- Anthony Ramos - Self - Guest Mentor
- Maluma - Self - Guest Mentor
- Saweetie - Self - Guest Mentor
- Keith Urban - Self - Mega Mentor
- Wynonna Judd - Self - Mega Mentor
- Claire Crosby - Self
- Christina Grimmie - Self - Guest Performer
- Sasha Allen - Self - Contestant
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