2A

2A or II-A may refer to:
* Alberta Highway 2A
* Alpha-2A adrenergic receptor
* Keratin 2A
* Massachusetts Route 2A
* Stalag II-A
* Telecom 2A, a satellite
* Transcription Factor II A

and also:
* Deutsche Bahn IATA designator
* The number of the French department Corse-du-Sud