The game against the Welsh region will be particularly significant for back rowers Chris Henry and Robbie Diack. Both players are set to make their 100th appearance for the province.
Their back row colleague Sean Doyle is included in an Ulster squad for the first time since breaking his leg in a club game in October.
There are no tickets for the fixture remaining. The match will be the 10th sold-out game at Ravenhill this season.
ULSTER Squad (v Cardiff Blues) - Backs (11): Michael Allen, Ruan Pienaar, Paddy Jackson, Paul Marshall, Darren Cave, Andrew Trimble, Tommy Bowe, Jared Payne, Peter Nelson, Craig Gilroy, Stuart Olding.
Forwards (16): Johann Muller, Callum Black, John Afoa, Robbie Diack, Iain Henderson, Declan Fitzpatrick, Dan Tuohy, Ricky Lutton, Rory Best, Mike McComish, Lewis Stevenson, Chris Henry, Nick Williams, Tom Court, Sean Doyle, Rob Herring.