The three acts have been tipped for big success next year and one will be honoured by the Brit Academy on December 20.
[Left: Laura Mvula / Right: Tom Odell]
"It's unbelievable and I'm in total shock. I don't think I've experienced this kind of shock before," Mvula said of her mention.
"It's such a huge honour to be included in this prestigious shortlist, I don't think that I can put it into words. Thank you."
AlunaGeorge stated: "We both feel incredibly honoured to be shortlisted for this award. Completely blown away, it's a great feeling to have our music recognised in such a big way. 2013 is going to be an incredible year for UK music."
Tom Odell added: "I'm thrilled to be nominated and I feel privileged to be in the same company as previous nominees of the caliber of Adele, Emeli Sande, Michael Kiwanuka and Florence."
Adele, Florence + the Machine and Ellie Goulding have been recipients of the prize in recent years - all of which have gone on to become global success stories.
Jessie J was awarded the honour in 2011, while Emeli Sandé was handed the prize earlier this year at the 2012 ceremony.
The Brits Critics' Choice Award is voted for by a panel of industry insiders.