2A or II-A may refer to:
Roads List of highways numbered 2A
Science 2A self-cleaving peptides Alpha-2A adrenergic receptor IARC group 2A Keratin 2A Transcription factor II A
Other Deutsche Bahn, IATA designator Second Amendment (disambiguation) Second Amendment to the United States Constitution, that protects right to keep and bear arms Stalag II-A Telecom 2A, a satellite the number of the French department Corse-du-Sud a strain of the bacterium Lactobacillus sakei 2A, a school size classification used by the University Interscholastic League in Texas, US
See also A2 (disambiguation) IIA (disambiguation)