FIRS
# FIRS

FIRS may refer to:

* Federal Inland Revenue Service, the federal tax administrator in Nigeria
* Fédération Internationale de Roller Sports, the International Federation of Roller Sports
* FIRS (index), a share index of the Banja Luka Stock Exchange
* Forensic Investigation Research Station, a "body farm" at Colorado Mesa University
* Forum of International Respiratory Societies, a respiratory health advocacy organization
