|Centuries:||1st century BC – 1st century – 2nd century|
|Decades:||40s 50s 60s – 70s – 80s 90s 100s|
|Years:||76 77 78 – 79 – 80 81 82|
|79 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||832|
|Chinese calendar||戊寅年 (Earth Tiger)
2775 or 2715
— to —
己卯年 (Earth Rabbit)
2776 or 2716
|Coptic calendar||−205 – −204|
|- Vikram Samvat||135–136|
|- Shaka Samvat||1–2|
|- Kali Yuga||3180–3181|
|Iranian calendar||543 BP – 542 BP|
|Islamic calendar||560 BH – 559 BH|
|Minguo calendar||1833 before ROC
|Seleucid era||390/391 AG|
|Thai solar calendar||621–622|
Year 79 (LXXIX) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Vespasianus (or, less frequently, year 832 Ab urbe condita). The denomination 79 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.
- Vespasianus Augustus and Titus Caesar Vespasianus become Roman Consul.
- June 23 – Vespasian dies of fever from diarrhea, his last words on his deathbed are: "I think I'm turning into a god." Titus succeeds his father as Roman emperor.
- August 24 – Mount Vesuvius erupts, destroying Pompeii, Herculaneum, Stabiae, and Oplontis. The Roman fleet based at Misenum, commanded by Pliny the Elder, evacuates refugees but he dies after inhaling volcanic fumes.
- Emperor Titus dedicates the famous Roman Colosseum.
- Chester is founded as a castrum or Roman fort with the name Deva Victrix. The fortress is built by Legio II Adiutrix and contains barracks, granaries, military baths and headquarters.
- Gnaeus Julius Agricola enters Caledonia (modern Scotland) but is resisted by the Caledonians.
- Agricola founds Mamucium, a frontier fort and settlement in the North West of England. This was the first Manchester, a distance to the east of Chester.
- To please the Senate, Titus exiles his Jewish mistress, Berenice of Cilicia.
- A commission of scholars canonizes the text of works of Confucius and his school.
- June 23 – Roman emperor Vespasian (b. 9 AD)
- August 25 – Pliny the Elder, Roman writer and scientist (killed by Vesuvius eruption) (b. 23 AD)
- September 23 – Pope Linus
- Caesius Bassus, Roman poet (killed by Mount Vesuvius eruption)
- Empress Ma (b. 40 AD)