| Millennium: | 1st Millennium BC |
|---|---|
| Centuries: | 6th cent. BC – 5th cent. BC – 4th cent. BC |
| Decades: | 460s BC 450s BC 440s BC – 430s BC – 420s BC 410s BC 400s BC |
| Years: | 442 BC 441 BC 440 BC – 439 BC – 438 BC 437 BC 436 BC |
| Gregorian calendar | 439 CDXXXIX |
| Ab urbe condita | 1192 |
| Assyrian calendar | 5189 |
| Bengali calendar | −154 |
| Berber calendar | 1389 |
| Buddhist calendar | 983 |
| Burmese calendar | −199 |
| Byzantine calendar | 5947–5948 |
| Chinese calendar | 戊寅年 (Earth Tiger) 3135 or 3075 — to — 己卯年 (Earth Rabbit) 3136 or 3076 |
| Coptic calendar | 155–156 |
| Discordian calendar | 1605 |
| Ethiopian calendar | 431–432 |
| Hebrew calendar | 4199–4200 |
| Hindu calendars | |
| - Vikram Samvat | 495–496 |
| - Shaka Samvat | 360–361 |
| - Kali Yuga | 3539–3540 |
| Holocene calendar | 10439 |
| Iranian calendar | 183 BP – 182 BP |
| Islamic calendar | 189 BH – 188 BH |
| Javanese calendar | 323–324 |
| Julian calendar | 439 CDXXXIX |
| Korean calendar | 2772 |
| Minguo calendar | 1473 before ROC 民前1473年 |
| Nanakshahi calendar | −1029 |
| Seleucid era | 750/751 AG |
| Thai solar calendar | 981–982 |
The year 439 BC