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|181 by topic|
|Ab urbe condita||934|
|Balinese saka calendar||102–103|
|Chinese calendar||庚申年 (Metal Monkey)|
2877 or 2817
— to —
辛酉年 (Metal Rooster)
2878 or 2818
|Coptic calendar||−103 – −102|
|- Vikram Samvat||237–238|
|- Shaka Samvat||102–103|
|- Kali Yuga||3281–3282|
|Iranian calendar||441 BP – 440 BP|
|Islamic calendar||455 BH – 454 BH|
|Minguo calendar||1731 before ROC|
|Seleucid era||492/493 AG|
|Thai solar calendar||723–724|
307 or −74 or −846
— to —
308 or −73 or −845
Year 181 (CLXXXI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Burrus (or, less frequently, year 934 Ab urbe condita). The denomination 181 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.
- Imperator Lucius Aurelius Commodus and Lucius Antistius Burrus become Roman Consuls.
- The Antonine Wall is overrun in Britannia.
- The volcano associated with Lake Taupo in New Zealand erupts, one of the largest on Earth in the last 5,000 years. The effects of this eruption are seen as far away as Rome and China.
- Emperor Xian of Han, last emperor of the Han dynasty (d. 234)
- Zhuge Liang, chancellor and regent of the Shu Han state in the Three Kingdoms period (d. 234)