| Years |
|---|
| Millennium |
| 1st millennium BC |
| Centuries |
| Decades |
| Years |
| 27 BC by topic |
|---|
| Arts, history, and science |
| Countries |
|
|
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 27 BC XXVI BC |
| Ab urbe condita | 727 |
| Ancient Greek era | 188th Olympiad, year 2 |
| Assyrian calendar | 4724 |
| Balinese saka calendar | N/A |
| Bengali calendar | −619 |
| Berber calendar | 924 |
| Buddhist calendar | 518 |
| Burmese calendar | −664 |
| Byzantine calendar | 5482–5483 |
| Chinese calendar | 癸巳年 (Water Snake) 2670 or 2610 — to — 甲午年 (Wood Horse) 2671 or 2611 |
| Coptic calendar | −310 – −309 |
| Discordian calendar | 1140 |
| Ethiopian calendar | −34 – −33 |
| Hebrew calendar | 3734–3735 |
| Hindu calendars | |
| - Vikram Samvat | 30–31 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3074–3075 |
| Holocene calendar | 9974 |
| Iranian calendar | 648 BP – 647 BP |
| Islamic calendar | 668 BH – 667 BH |
| Javanese calendar | N/A |
| Julian calendar | 27 BC XXVI BC |
| Korean calendar | 2307 |
| Minguo calendar | 1938 before ROC 民前1938年 |
| Nanakshahi calendar | −1494 |
| Seleucid era | 285/286 AG |
| Thai solar calendar | 516–517 |
| Tibetan calendar | ཆུ་མོ་སྦྲུལ་ལོ་ (female Water-Snake) 100 or −281 or −1053 — to — ཤིང་ཕོ་རྟ་ལོ་ (male Wood-Horse) 101 or −280 or −1052 |
Year 27 BC was either a common year starting on Sunday, Monday or Tuesday or a leap year starting on Monday of the Julian calendar.