AD-5 or variation, may refer to:

• AD 5, the 5th year of the Common Era
• USS Prairie (AD-5), 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[edit]

• 5AD (radio station), Adelaide, South Australia, Australia
• Ad5-nCoV, COVID-19 vaccine
• Ad5-EBOV, Ebola vaccine
• 5 (disambiguation)
• AD (disambiguation)