| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 0s 10s 20s – 30s – 40s 50s 60s |
| Years: | 30 31 32 – 33 – 34 35 36 |
| Gregorian calendar | AD 33 XXXIII |
| Ab urbe condita | 786 |
| Assyrian calendar | 4783 |
| Balinese saka calendar | N/A |
| Bengali calendar | −560 |
| Berber calendar | 983 |
| Buddhist calendar | 577 |
| Burmese calendar | −605 |
| Byzantine calendar | 5541–5542 |
| Chinese calendar | 壬辰年 (Water Dragon) 2729 or 2669 — to — 癸巳年 (Water Snake) 2730 or 2670 |
| Coptic calendar | −251 – −250 |
| Discordian calendar | 1199 |
| Ethiopian calendar | 25–26 |
| Hebrew calendar | 3793–3794 |
| Hindu calendars | |
| - Vikram Samvat | 89–90 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3133–3134 |
| Holocene calendar | 10033 |
| Iranian calendar | 589 BP – 588 BP |
| Islamic calendar | 607 BH – 606 BH |
| Javanese calendar | N/A |
| Julian calendar | AD 33 XXXIII |
| Korean calendar | 2366 |
| Minguo calendar | 1879 before ROC 民前1879年 |
| Nanakshahi calendar | −1435 |
| Seleucid era | 344/345 AG |
| Thai solar calendar | 575–576 |
| Tibetan calendar | 阳水龙年 (male Water-Dragon) 159 or −222 or −994 — to — 阴水蛇年 (female Water-Snake) 160 or −221 or −993 |
33 is a year in the 1st century. It was a common year starting on Thursday of the Julian calendar. At the time, it was known in the Roman world as the Year of the Consulship of Ocella and Sulla.