The ceremony, which took place at the MGM Grand Garden Arena, featured performances by Carrie Underwood and reigning Entertainer of the Year Jason Aldean, and appearances by Blake Shelton, Kelly Clarkson, Kelsea Ballerini, Dierks Bentley, Luke Bryan, Florida Georgia Line, Miranda Lambert and more.
Awards were presented by ET's own Nancy O'Dell, Ashton Kutcher, Eve, Dustin Lynch, Cam, David Boreanaz, A.J. Buckley, Sam Elliott, Rebecca Romijn and Max Thieriot, along with athletes Drew Brees and Lindsey Vonn.
Reba McEntire played master of ceremonies for the 15th time at this year's ACM Awards. She last hosted the show in 2012, with Blake Shelton as her co-host.
"I really enjoy hosting," McEntire told ET last month. "It's very exciting. I love live television. So, to be able to know the ins and outs and who's doing what and be there for the rehearsals... it's just fun."
Check out the complete list of winners below:
ENTERTAINER OF THE YEAR
Jason Aldean *WINNER*