Warwickshire will be known as the Birmingham Bears in next summer's T20 Blast tournament.
The county will still be known as Warwickshire in the County Championship and 50-over Royal London One-Day Cup.
In changes to the game announced on Tuesday, the T20 competition - to be known as the NatWest T20 Blast - will primarily take place on Friday evenings.
Bears chief executive Colin Povey said: "Birmingham and Edgbaston has been the Club's home since 1886 and we believe that adopting the Birmingham Bears name for the NatWest T20 Blast presents a great opportunity for us to engage even more closely with fans living and working at the heart of the City.
"Asian families, business men and women working in the city's commercial districts and local cricket clubs are three particular audiences the club is seeking to work with more next season.
"T20 games in 2014 will predominantly be played on Friday evenings, so this fixed slot gives supporters a time that we hope will be associated with the Birmingham Bears; similar to Saturday afternoon football or rugby.
"However, despite our T20 name change, we will continue to maintain the proud history of the club and play under the Warwickshire banner in the other two more traditional formats."
Councillor Ian Ward, deputy leader of Birmingham City Council, added: "The Birmingham Bears T20 team is an incredibly exciting proposition that can unite sports fans across the city on Friday evenings next summer.
"The club and the redeveloped stadium provide so many great opportunities for the local communities to play and watch world-class cricket here in Birmingham, and I'm looking forward to seeing people get behind the Bears."