AD26 or variation, may refer to:
AD 26, the 26th year after Jesus birth Ad26, adenovirus serotype 26, used for the creation of recombinant virus vectors (rAd26) , WWII-era U.S. destroyer tender
See also
26 Air Defence Regiment (India) (26.AD) Ad26.COV2.S, COVID-19 vaccine by Janssen Pharmaceutical (Johnson & Johnson) Ad26.ZEBOV, Ebola vaccine 26 (disambiguation) AD (disambiguation)