|Gregorian calendar||AD 15|
|Ab urbe condita||768|
|Balinese saka calendar||N/A|
|Chinese calendar||甲戌年 (Wood Dog)|
2711 or 2651
— to —
乙亥年 (Wood Pig)
2712 or 2652
|Coptic calendar||−269 – −268|
|- Vikram Samvat||71–72|
|��- Shaka Samvat||N/A|
|- Kali Yuga||3115–3116|
|Iranian calendar||607 BP – 606 BP|
|Islamic calendar||626 BH – 625 BH|
|Julian calendar||AD 15|
|Minguo calendar||1897 before ROC|
|Seleucid era||326/327 AG|
|Thai solar calendar||557–558|
141 or −240 or −1012
— to —
142 or −239 or −1011
AD 15 (XV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Caesar and Flaccus (or, less frequently, year 768 Ab urbe condita). The denomination AD 15 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- Early (approx.) – Emona (on the site of modern-day Ljubljana) is founded by Legio XV Apollinaris.
- May – As part of his campaign against the Germanic peoples, Germanicus captures Thusnelda, wife of Arminius.
- Summer – Germanicus launches a two-pronged attack from Vetera and Moguntiacum. On his return journey, he recaptures the aquila of Legio XIX and visits the battlefield of the Teutoburg Forest. Germanicus arranges the burial for the remains of Varus' army.
- Varna (Odessus), on the Bulgarian Black Sea Coast, is annexed to the Roman province of Moesia.
- In Rome, the selection of civil servants passes from the people to the Emperor and the Senate.
- The river Tiber floods parts of Rome.
- Valerius Gratus is appointed Prefect of the Roman province of Judea.
Arts and sciences
- September 24 – Vitellius, Roman Emperor (d. AD 69)
- November 6 – Agrippina the Younger, Roman empress (or possibly AD 16) (d. AD 59)
- Apollonius of Tyana, Greek philosopher (d. c. AD 100)
- According to Balduin Saria in 1938; not supported by later archaeological findings. Šašel Kos, Marjeta (September 2012). "2000 let Emone? Kaj bomo praznovali?" [2000 Years of Emona? What Will We Celebrate?] (PDF). Ljubljana: glasilo Mestne občine Ljubljana [Ljubljana: The Bulletin of the City Municipality of Ljubljana] (in Slovenian). XVII (7): 28–29. ISSN 1318-797X. Archived from the original (PDF) on February 20, 2013. Retrieved July 1, 2013.
- Tacitus, The Annals 1.57.
- Tacitus, The Annals 1.62
- Tacitus, The Annals 1.76.