| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1615 by topic |
|---|
| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Works category |
| Gregorian calendar | 1615 MDCXV |
| Ab urbe condita | 2368 |
| Armenian calendar | 1064 ԹՎ ՌԿԴ |
| Assyrian calendar | 6365 |
| Balinese saka calendar | 1536–1537 |
| Bengali calendar | 1022 |
| Berber calendar | 2565 |
| English Regnal year | 12 Ja. 1 – 13 Ja. 1 |
| Buddhist calendar | 2159 |
| Burmese calendar | 977 |
| Byzantine calendar | 7123–7124 |
| Chinese calendar | 甲寅年 (Wood Tiger) 4312 or 4105 — to — 乙卯年 (Wood Rabbit) 4313 or 4106 |
| Coptic calendar | 1331–1332 |
| Discordian calendar | 2781 |
| Ethiopian calendar | 1607–1608 |
| Hebrew calendar | 5375–5376 |
| Hindu calendars | |
| - Vikram Samvat | 1671–1672 |
| - Shaka Samvat | 1536–1537 |
| - Kali Yuga | 4715–4716 |
| Holocene calendar | 11615 |
| Igbo calendar | 615–616 |
| Iranian calendar | 993–994 |
| Islamic calendar | 1023–1024 |
| Japanese calendar | Keichō 20 / Genna 1 (元和元年) |
| Javanese calendar | 1535–1536 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 3948 |
| Minguo calendar | 297 before ROC 民前297年 |
| Nanakshahi calendar | 147 |
| Thai solar calendar | 2157–2158 |
| Tibetan calendar | 阳木虎年 (male Wood-Tiger) 1741 or 1360 or 588 — to — 阴木兔年 (female Wood-Rabbit) 1742 or 1361 or 589 |
1615 (MDCXV) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1615th year of the Common Era (CE) and Anno Domini (AD) designations, the 615th year of the 2nd millennium, the 15th year of the 17th century, and the 6th year of the 1610s decade. As of the start of 1615, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.