TOP ARTIST
Ariana GrandeOne Direction
Katy Perry
Sam Smith
Taylor Swift -- WINNER
TOP COUNTRY ARTIST
Jason AldeanLuke Bryan
Florida Georgia Line -- WINNER
Brantley Gilbert
Blake Shelton
BILLBOARD CHART ACHIEVEMENT AWARD PRESENTED BY SAMSUNG GALAXY (FAN-VOTED)
Iggy AzaleaTaylor Swift -- WINNER
Meghan Trainor
TOP TOURING ARTIST
Lady GagaOne Direction -- WINNER
Katy Perry
The Rolling Stones
Justin Timberlake
TOP FEMALE ARTIST
Iggy AzaleaAriana Grande
Katy Perry
Taylor Swift -- WINNER
Meghan Trainor
TOP RADIO SONG
John Legend, "All of Me" -- WINNERMAGIC!, "Rude"
Nico & Vinz, "Am I Wrong"
Sam Smith, "Stay With Me"
Pharrell Williams, "Happy
TOP MALE ARTIST
DrakePharrell Williams
Ed Sheeran
Sam Smith -- WINNER
Justin Timberlake
TOP RAP SONG
Iggy Azalea feat. Charli XCX, "Fancy" -- WINNERIggy Azalea feat. Rita Ora, "Black Widow"
Big Sean feat. E-40, "I Don't F--- With You"
Nicki Minaj, "Anaconda"
Bobby Shmurda, "Hot Boy"
TOP BILLBOARD 200 ALBUM
Maroon 5, VPentatonix, That's Christmas to Me
Ed Sheeran, x
Sam Smith, In the Lonely Hour
Taylor Swift, 1989 -- WINNER
TOP DUO/GROUP
5 Seconds of SummerFlorida Georgia Line
MAGIC!
Maroon 5
One Direction -- WINNER
TOP NEW ARTIST
5 Seconds of SummerIggy Azalea
Hozier
Sam Smith -- WINNER
Meghan Trainor
TOP BILLBOARD 200 ARTIST
One DirectionPentatonix
Ed Sheeran
Sam Smith
Taylor Swift -- WINNER
TOP HOT 100 ARTIST
Iggy AzaleaAriana Grande
Sam Smith
Taylor Swift -- WINNER
Meghan Trainor
TOP DIGITAL SONGS ARTIST
Iggy AzaleaEd Sheeran
Sam Smith
Taylor Swift -- WINNER
Meghan Trainor
TOP RADIO SONGS ARTIST
John LegendMaroon 5
Ed Sheeran
Sam Smith -- WINNER
Taylor Swift
TOP SOCIAL ARTIST
Justin Bieber -- WINNERMiley Cyrus
Selena Gomez
Ariana Grande
Taylor Swift
TOP STREAMING ARTIST
Iggy Azalea -- WINNERAriana Grande
Nicki Minaj
Taylor Swift
Meghan Trainor
TOP R&B ARTIST
BeyoncéChris Brown
John Legend
Trey Songz
Pharrell Williams -- WINNER
TOP RAP ARTIST
Iggy Azalea -- WINNERJ. Cole
Drake
Nicki Minaj
Rae Sremmurd
TOP ROCK ARTIST
BastilleColdplay
Fall Out Boy
Hozier -- WINNER
Lorde
TOP LATIN ARTIST
J BalvinJuan Gabriel
Enrique Iglesias
Prince Royce
Romeo Santos -- WINNER
TOP DANCE/ELECTRONIC ARTIST
AviciiClean Bandit
Disclosure
Calvin Harris -- WINNER
Lindsey Stirling
TOP CHRISTIAN ARTIST
Casting CrownsHillsong United -- WINNER
Lecrae
MercyMe
Newsboys
TOP SOUNDTRACK
The Fault in Our StarsFifty Shades of Grey
Frozen -- WINNER
Guardians of the Galaxy: Awesome Mix: Vol. 1
Into the Woods
TOP R&B ALBUM
Beyoncé, BeyoncéChris Brown, X
Michael Jackson, Xscape
John Legend, Love in the Future
Pharrell Williams, G I R L -- WINNER
TOP RAP ALBUM
J. Cole, 2014 Forest Hills Drive -- WINNERDrake, If You're Reading This It's Too Late
Nicki Minaj, The Pinkprint
Iggy Azalea, The New Classic
Eminem, The Marshall Mathers LP 2
TOP COUNTRY ALBUM
Jason Aldean, Old Boots, New Dirt -- WINNERGarth Brooks, Man Against Machine
Luke Bryan, Crash My Party
Brantley Gilbert, Just As I Am
Miranda Lambert, Platinum
TOP ROCK ALBUM
AC/DC, Rock or BustThe Black Keys, Turn Blue
Coldplay, Ghost Stories -- WINNER
Hozier, Hozier
Lorde, Pure Heroine
TOP LATIN ALBUM
Juan Gabriel, Los DĂşoEnrique Iglesias, Sex and Love -- WINNER
Romeo Santos, Formula: Vol. 2
Santana, Corazon
Marc Anthony, 3.0
TOP DANCE/ELECTRONIC ALBUM
Avicii, TrueDisclosure, Settle
Calvin Harris, Motion
Skrillex, Recess
Lindsey Stirling, Shatter Me -- WINNER
TOP CHRISTIAN ALBUM
Lecrae, Anomaly -- WINNERCasting Crowns, Thrive
MercyMe, Welcome to the New
NEEDTOBREATHE, Rivers in the Wasteland
Chris Tomlin, Love Ran Red
TOP HOT 100 SONG
Iggy Azalea feat. Charli XCX, "Fancy"John Legend, "All of Me"
Sam Smith, "Stay With Me"
Taylor Swift, "Shake It Off"
Meghan Trainor, "All About That Bass" -- WINNER
TOP DIGITAL SONG
Mark Ronson feat. Bruno Mars, "Uptown Funk!"Sam Smith, "Stay With Me"
Taylor Swift, "Shake It Off"
Meghan Trainor, "All About That Bass" -- WINNER
Pharrell Williams, "Happy
TOP STREAMING SONG (AUDIO)
Iggy Azalea feat. Charli XCX, "Fancy"Hozier, "Take Me to Church"
John Legend, "All of Me" -- WINNER
Sam Smith, "Stay With Me"
Tove Lo, "Habits (Stay High)"
TOP STREAMING SONG (VIDEO)
Idina Menzel, "Let It Go"Bobby Shmurda, "Hot Boy"
Taylor Swift, "Blank Space"
Taylor Swift, "Shake It Off" -- WINNER
Meghan Trainor, "All About That Bass"
TOP R&B SONG
Chris Brown feat. Lil Wayne, French Montana, Too $hort & Tyga, "Loyal"Jason Derulo feat. 2 Chainz, "Talk Dirty"
Jeremih feat. YG, "Don't Tell 'Em"
John Legend, "All of Me"
Pharrell Williams, "Happy" -- WINNER
TOP COUNTRY SONG
Jason Aldean, "Burnin' It Down" -- WINNERLuke Bryan, "Play It Again"
Sam Hunt, "Leave the Night On"
Florida Georgia Line feat. Luke Bryan, "This Is How We Roll"
Florida Georgia Line, "Dirt"
TOP ROCK SONG
Bastille, "Pompeii"Coldplay, "A Sky Full of Stars"
Fall Out Boy, "Centuries"
Hozier, "Take Me to Church" -- WINNER
Paramore, "Ain't It Fun"
TOP LATIN SONG
J Balvin feat. Farruko, "6 AM"Enrique Iglesias feat. Descemer Bueno & Gente de Zona, "Bailando" -- WINNER
Romeo Santos, "Eres MĂa"
Romeo Santos feat. Drake, "Odio"
Romeo Santos, "Propuesta Indecente"
TOP DANCE/ELECTRONIC SONG
Clean Bandit feat. Jess Glynne, "Rather Be"Disclosure feat. Sam Smith, "Latch"
DJ Snake & Lil Jon, "Turn Down For What" -- WINNER
Ariana Grande feat. Zedd, "Break Free"
Calvin Harris, "Summer"
TOP CHRISTIAN SONG
Francesca Battistelli, "He Knows My Name"Hillsong United, "Oceans (Where Feet May Fail)"
MercyMe, "Greater"
Newsboys, "We Believe"
Carrie Underwood, "Something in the Water" -- WINNER
Source: Billboard 2015