| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 10s 20s 30s – 40s – 50s 60s 70s |
| Years: | 42 43 44 – 45 – 46 47 48 |
| 45 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 45 XLV |
| Ab urbe condita | 798 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1799 – -1798 |
| Bengali calendar | -548 |
| Berber calendar | 995 |
| Buddhist calendar | 589 |
| Burmese calendar | -593 |
| Byzantine calendar | 5553 – 5554 |
| Chinese calendar | 甲辰年十一月廿四日 (2681/2741-11-24) — to —
乙巳年十二月初四日(2682/2742-12-4) |
| Coptic calendar | -239 – -238 |
| Ethiopian calendar | 37 – 38 |
| Hebrew calendar | 3805 – 3806 |
| Hindu calendars | |
| - Bikram Samwat | 101 – 102 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3146 – 3147 |
| Holocene calendar | 10045 |
| Iranian calendar | 577 BP – 576 BP |
| Islamic calendar | 595 BH – 594 BH |
| Japanese calendar | |
| Korean calendar | 2378 |
| Thai solar calendar | 588 |
Year 45 (XLV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.