Jednostka Wojskowa „GROM” im. Cichociemnych Spadochroniarzy Armii Krajowej – polska jednostka specjalna, sformowana 13 lipca 1990 (Jednostka Wojskowa nr 2305).



GROM (In Polish: Grupa Reagowania Operacyjno-Manewrowego "Operational Mobile Reaction Group"; the acronym itself means "thunderbolt") is the primary special forces unit of the Polish Land Forces. It was officially activated on July 8, 1990. It can be and is deployed in a variety of special operations and unconventional warfare roles, including anti-terrorist actions and projection of power behind enemy lines.

The unit's rarely used full, formal Polish name is: Wojskowa Formacja Specjalna GROM im. Cichociemnych Spadochroniarzy Armii Krajowej (Special Military Formation GROM of the Dark and Silent Parachutists of the Polish Army). The acronym GROM is also related to the name of General Gromosław Czempiński. In Polish Army jargon, it is called JW 2305 (JW stands for Jednostka Wojskowa—Military Unit).