AD-5 or ''variation'', may refer to: *

AD 5 __NOTOC__ AD 5 was a common year starting on Thursday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Messalla and Cinna (or, less frequently, year 758 ''Ab urbe condita''). The denomination "AD 5" f ...

, the 5th year of the Common Era * , an auxiliary cruiser of the U.S. Navy * Douglas AD-5 Skyraider, fighter-bomber airplane * AD5 experiment "ALPHA" at the CERN Antiproton Decelerator ring; an antimatter physics experiment * Ad5, adenovirus serotype 5, a virus commonly used as a recombinant virus therapy vector (rAd5) * Alzheimer's disease, stage 5 * Alzheimer's Disease 5, a familial variant of Alzhemier's; see List of OMIM disorder codes

See also