The former X Factor contestant, who is also among the nominees, joins Adele, Bruno Mars, Coldplay and Ed Sheeran on the list of performers.
Florence + the Machine, Noel Gallagher's High Flying Birds and Rihanna will also play at this year's event, which will be broadcast live on ITV1.
Murs received his second Brit Award nomination this year, making the list for his number one single 'Heart Skips A Beat'. Fellow UK acts Ed Sheeran, Jessie J and Adele are all in line for multiple awards.
Nominees were announced last week at an exclusive event at The Savoy, London, where Sheeran and Critics' Choice winner Emeli Sandé performed for attendees.
The 2012 Brit Awards will be held on February 21 at London's O2 Arena.
> Brit Awards 2012 nominations: Florence + the Machine, Coldplay, more
Watch a video to Olly Murs's 'Heart Skips A Beat' below: