| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century – 2nd century – 3rd century |
| Decades: | 140s 150s 160s – 170s – 180s 190s 200s |
| Years: | 169 170 171 – 172 – 173 174 175 |
| 172 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 172 CLXXII |
| Ab urbe condita | 925 |
| Armenian calendar | N/A |
| Assyrian calendar | 4922 |
| Bahá'í calendar | -1672–-1671 |
| Bengali calendar | -421 |
| Berber calendar | 1122 |
| English Regnal year | N/A |
| Buddhist calendar | 716 |
| Burmese calendar | -466 |
| Byzantine calendar | 5680–5681 |
| Chinese calendar | 辛亥年十一月十八日 (2808/2868-11-18) — to —
壬子年十一月廿八日(2809/2869-11-28) |
| Coptic calendar | -112–-111 |
| Ethiopian calendar | 164–165 |
| Hebrew calendar | 3932–3933 |
| Hindu calendars | |
| - Vikram Samvat | 228–229 |
| - Shaka Samvat | 94–95 |
| - Kali Yuga | 3273–3274 |
| Holocene calendar | 10172 |
| Iranian calendar | 450 BP – 449 BP |
| Islamic calendar | 464 BH – 463 BH |
| Japanese calendar | |
| Korean calendar | 2505 |
| Minguo calendar | 1740 before ROC 民前1740年 |
| Thai solar calendar | 715 |
Year 172 (CLXXII) was a leap 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 Scipio and Maximus (or, less frequently, year 925 Ab urbe condita). The denomination 172 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.