Pop star Jessie J has topped this year's Mobo shortlist with five nominations, including best song.
The 23-year-old, real name Jessica Cornish, is also recognised in the best album, best newcomer, best video and best UK act categories.
Adele, whose 21 is the biggest-selling album of the year, receives four nominations, as do rappers Tinie Tempah and Wretch 32.
The prizes will be handed out in Glasgow on 5 October.
Winners are selected by a public vote, now up and running on the Mobo website.
"I am so honoured to be nominated," said Jessie J in a statement.
"I have watched so many of the artists I look up to being nominated, winning awards and performing.
"It's amazing to be in the company of such amazing talent."
Her nomination for best UK act pits her against nine other artists, among them Adele, Chipmunk, Katy B and Tinie Tempah.
She shares the best newcomer category with the likes of Ed Sheeran, Emeli Sande and Rizzle Kicks - currently at number one as the featured artist on Olly Murs' single Heart Skips A Beat.
Unusually this year, the Mobos' best album prize mirrors the Mercury Prize shortlist. Katy B's On a Mission, Tinie Tempah's Disc-Overy and Adele's 21 are up for both awards.
The Mobo list in this category is completed by Chase and Status's platinum-selling dance album No More Idols and Jessie J's debut Who You Are.
Beyonce, Snoop Dogg, Cee-Lo Green and Rihanna are in competition for best international act, alongside such newcomers as Aloe Blacc and Bruno Mars.
"We are very pleased with the level of this year's nominees," said Kanya King, founder of the Mobos.
"These artists have shown real determination to make it happen."
Tinie Tempah was the surprise star of last year's ceremony, picking up best newcomer and best video shortly after his debut album topped the charts.
But JLS, who also scooped two prizes in 2010, are absent from this year's list.
This year's Mobo Awards will be co-hosted by US R&B star Jason Derulo.
Jessie J, Alexis Jordan and Katy B are all confirmed to perform at the show, to be held at Glasgow's SECC.