AD 100
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | AD 100 C |
| Ab urbe condita | 853 |
| Assyrian calendar | 4850 |
| Bengali calendar | −493 |
| Berber calendar | 1050 |
| Buddhist calendar | 644 |
| Burmese calendar | −538 |
| Byzantine calendar | 5608–5609 |
| Chinese calendar |
己亥年 (Earth Pig) 2796 or 2736 — to — 庚子年 (Metal Rat) 2797 or 2737 |
| Coptic calendar | −184 – −183 |
| Discordian calendar | 1266 |
| Ethiopian calendar | 92–93 |
| Hebrew calendar | 3860–3861 |
| Hindu calendars | |
| - Vikram Samvat | 156–157 |
| - Shaka Samvat | 21–22 |
| - Kali Yuga | 3200–3201 |
| Holocene calendar | 10100 |
| Iranian calendar | 522 BP – 521 BP |
| Islamic calendar | 538 BH – 537 BH |
| Javanese calendar | N/A |
| Julian calendar | AD 100 C |
| Korean calendar | 2433 |
| Minguo calendar | 1812 before ROC 民前1812年 |
| Nanakshahi calendar | −1368 |
| Seleucid era | 411/412 AG |
| Thai solar calendar | 642–643 |
AD 100 (C) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Traianus and Frontinus (or, less frequently, year 853 Ab urbe condita). The denomination AD 100 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.
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