Adele, Rihanna, LMFAO, Lady Gaga, Lil Wayne top Billboard 2012 Music Awards.

Adele takes the lead as a nominee in 18 award categories, including Top Artist, Top Female Artist and Top Billboard 200 Artist. "Rolling In The Deep," the lead single from her blockbuster sophomore album "21," places the U.K. singer as a contender in seven song categories.

     
Adele, LMFAO, Rihanna, Lady Gaga and Lil Wayne lead the finalists for the 2012 Billboard Music Awards, which will take place at Las Vegas' MGM Grand and be broadcast live Sunday May 20, 8/7c on ABC.
 
Check the list on Billboard.com
Top Billboard 200 Artist:
Adele
Justin Bieber
Michael Buble
Lady Gaga
Lil Wayne
Top Hot 100 Artist:
Adele
LMFAO
Bruno Mars
Katy Perry
Rihanna

Top Digital Songs Artist:
Adele
LMFAO
Bruno Mars
Katy Perry
Rihanna

Top Radio Songs Artist:
Adele
Katy Perry
Bruno Mars
Nicki Minaj
Rihanna

Top Touring Artist:
Bon Jovi
Taylor Swift
Take That
U2
Roger Waters

Top Social Artist:
Justin Bieber
Eminem
Lady Gaga
Rihanna
Shakira


Top Streaming Artist:
Lil Wayne
LMFAO
Nicki Minaj
Bruno Mars
Rihanna

Top Digital Media Artist:
Adele
Justin Bieber
Lady Gaga
Lil Wayne
Rihanna
Top Pop Artist:
Adele
Lady Gaga
LMFAO
Katy Perry
Rihanna

Top R&B Artist:
Beyonce
Chris Brown
Cee Lo Green
Miguel
Rihanna

Top Rap Artist:
Drake
Lil Wayne
LMFAO
Nicki Minaj
Wiz Khalifa

Top Country Artist:
Jason Aldean
Zac Brown Band
Lady Antebellum
Blake Shelton
Taylor Swift

Top Rock Artist:
The Black Keys
Coldplay
Foster The People
Foo Fighters
Mumford & Sons

Top Alternative Artist:
The Black Keys
Coldplay
Foster The People
Foo Fighters
Mumford & Sons
Top Latin Artist:
Mana
Pitbull
Prince Royce
Romeo Santos
Shakira

Top Dance Artist:
David Guetta
Lady Gaga
LMFAO
Rihanna
Britney Spears
Top Christian Artist:
Casting Crowns
MercyMe
Skillet
Laura Story
Chris Tomlin

Top Billboard 200 Album:
Adele "21"
Michael Buble "Christmas"
Drake "Take Care"
Lady Gaga "Born This Way"
Lil Wayne "Tha Carter IV"

Top Pop Album
Adele "19"
Adele "21"
Michael Buble "Christmas"
Lady Gaga "Born This Way"
Justin Bieber "Under The Mistletoe"

Top R&B Album
Beyonce "4"
Mary J. Blige "My Life II…The Journey Continues (Act 1)"
Chris Brown "F.A.M.E."
Jennifer Hudson "I Remember Me"
Rihanna "Talk That Talk"

Top Rap Album:
Bad Meets Evil "Hell: The Sequel"
Drake "Take Care"
Jay Z & Kanye West "Watch The Throne"
Lil Wayne "Tha Carter IV"
LMFAO "Sorry For Party Rocking"