| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century – 2nd century – 3rd century |
| Decades: | 160s 170s 180s – 190s – 200s 210s 220s |
| Years: | 188 189 190 – 191 – 192 193 194 |
| 191 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 191 CXCI |
| Ab urbe condita | 944 |
| Armenian calendar | N/A |
| Assyrian calendar | 4941 |
| Bahá'í calendar | -1653–-1652 |
| Bengali calendar | -402 |
| Berber calendar | 1141 |
| English Regnal year | N/A |
| Buddhist calendar | 735 |
| Burmese calendar | -447 |
| Byzantine calendar | 5699–5700 |
| Chinese calendar | 庚午年十一月十八日 (2827/2887-11-18) — to —
辛未年十一月廿八日(2828/2888-11-28) |
| Coptic calendar | -93–-92 |
| Ethiopian calendar | 183–184 |
| Hebrew calendar | 3951–3952 |
| Hindu calendars | |
| - Vikram Samvat | 247–248 |
| - Shaka Samvat | 113–114 |
| - Kali Yuga | 3292–3293 |
| Holocene calendar | 10191 |
| Iranian calendar | 431 BP – 430 BP |
| Islamic calendar | 444 BH – 443 BH |
| Japanese calendar | |
| Korean calendar | 2524 |
| Minguo calendar | 1721 before ROC 民前1721年 |
| Thai solar calendar | 734 |
Year 191 (CXCI) 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 Apronianus and Bradua (or, less frequently, year 944 Ab urbe condita). The denomination 191 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.