2A3 may refer to: * 2A3 Kondensator 2P, a Soviet self-propelled Howitzer * Larsen Bay Airport, Alaska — FAA LID code: 2A3 * Bessemer Airport, Alabama — former FAA LID code: 2A3 * a Power triode commonly used in Single-ended triode (SET) amplifiers This disambiguation page lists articles associated with the same title formed as a letter-number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article.