|Centuries:||1st century – 2nd century – 3rd century|
|Decades:||140s 150s 160s – 170s – 180s 190s 200s|
|Years:||171 172 173 – 174 – 175 176 177|
|174 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||927|
|Chinese calendar||癸丑年 (Water Ox)
2870 or 2810
— to —
甲寅年 (Wood Tiger)
2871 or 2811
|Coptic calendar||−110 – −109|
|- Vikram Samvat||230–231|
|- Shaka Samvat||96–97|
|- Kali Yuga||3275–3276|
|Iranian calendar||448 BP – 447 BP|
|Islamic calendar||462 BH – 461 BH|
|Minguo calendar||1738 before ROC
|Seleucid era||485/486 AG|
|Thai solar calendar||716–717|
Year 174 (CLXXIV) 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 Gallus and Flaccus (or, less frequently, year 927 Ab urbe condita). The denomination 174 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.
- Empress Faustina the Younger accompanies her husband, Marcus Aurelius, on various military campaigns and enjoys the love of the Roman soldiers. Aurelius gives her the title of Mater Castrorum (Mother of the Camp).
- Marcus Aurelius officially confers the title Fulminata (Thundering) to the Legio XII Fulminata.
- Reign in India of Yajnashri Satakarni, Satavahana king of the Andhra. He extends his empire from the center to the north of India.
Arts and sciences
- Meditations by Marcus Aurelius is written, in Greek, while on military campaigns.
- Jia Kui, general of Wei (d. 230)
- Tuoba Liwei, leader of the Tuoba clan (d. 277)
- Zhuge Jin, official of the Wu Kingdom, elder brother of Zhuge Liang (d. 241)