The winner of the award will be announced at the End of Season Player Awards Ceremony after the Blues versus Munster match on 9th May.
The 2009/10 season has seen many players perform outstandingly for the Blues, as the team continues to challenge on two fronts right to the end of the season.
This is the last chance to vote for your choice from the shortlist. Past winners of this prestigious prize include Blues Number 8 - Xavier Rush, Fullback - Ben Blair, and last year's winner Leigh Halfpenny, who have all made the shortlist again this season.
Get your vote in now on the home page of the official Cardiff Blues website.