Martin is expected to accompany Gallagher on stage during his performance slot at the ceremony, which will take place at London's O2 Arena on February 21.
© WENN
© BBC
Brit Awards host James Corden let slip of the collaboration during an interview on BBC Radio 2.
He said: "I think - and I don't know if this is true and I'm almost certain that I'm not supposed to tell you - that Chris Martin is going to accompany [Noel Gallagher] on the piano."
Coldplay are up for 'British Album Of The Year' and 'British Group' at the ceremony, while Gallagher will compete for 'British Male Solo Artist'.
Adele, Olly Murs, Florence + the Machine, Ed Sheeran and Bruno Mars have also been confirmed to play this year's Brit Awards.
> Brit Awards 2012 nominations: Florence + the Machine, Coldplay, more
> The Brit Awards 2012 - Who should win?
Watch Chris Martin and Noel Gallagher perform Oasis's 'Live Forever' at a charity gig in 2002 below:
