| Years |
|---|
| Millennium |
| 1st millennium BC |
| Centuries |
| Decades |
| Years |
| 275 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 275 BC CCLXXIV BC |
| Ab urbe condita | 479 |
| Ancient Egypt era | XXXIII dynasty, 49 |
| - Pharaoh | Ptolemy II Philadelphus, 9 |
| Ancient Greek era | 126th Olympiad, year 2 |
| Assyrian calendar | 4476 |
| Balinese saka calendar | N/A |
| Bengali calendar | −867 |
| Berber calendar | 676 |
| Buddhist calendar | 270 |
| Burmese calendar | −912 |
| Byzantine calendar | 5234–5235 |
| Chinese calendar | 乙酉年 (Wood Rooster) 2422 or 2362 — to — 丙戌年 (Fire Dog) 2423 or 2363 |
| Coptic calendar | −558 – −557 |
| Discordian calendar | 892 |
| Ethiopian calendar | −282 – −281 |
| Hebrew calendar | 3486–3487 |
| Hindu calendars | |
| - Vikram Samvat | −218 – −217 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2826–2827 |
| Holocene calendar | 9726 |
| Iranian calendar | 896 BP – 895 BP |
| Islamic calendar | 924 BH – 923 BH |
| Javanese calendar | N/A |
| Julian calendar | N/A |
| Korean calendar | 2059 |
| Minguo calendar | 2186 before ROC 民前2186年 |
| Nanakshahi calendar | −1742 |
| Seleucid era | 37/38 AG |
| Thai solar calendar | 268–269 |
| Tibetan calendar | ཤིང་མོ་བྱ་ལོ་ (female Wood-Bird) −148 or −529 or −1301 — to — མེ་ཕོ་ཁྱི་ལོ་ (male Fire-Dog) −147 or −528 or −1300 |
Year 275 BC was a year of the pre-Julian Roman calendar.