| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 19th century – 20th century – 21st century |
| Decades: | 1880s 1890s 1900s – 1910s – 1920s 1930s 1940s |
| Years: | 1914 1915 1916 – 1917 – 1918 1919 1920 |
| Gregorian calendar | 1917 MCMXVII |
| Ab urbe condita | 2670 |
| Armenian calendar | 1366 ԹՎ ՌՅԿԶ |
| Assyrian calendar | 6667 |
| Bahá'í calendar | 73–74 |
| Balinese saka calendar | 1838–1839 |
| Bengali calendar | 1324 |
| Berber calendar | 2867 |
| British Regnal year | 7 Geo. 5 – 8 Geo. 5 |
| Buddhist calendar | 2461 |
| Burmese calendar | 1279 |
| Byzantine calendar | 7425–7426 |
| Chinese calendar | 丙辰年 (Fire Dragon) 4613 or 4553 — to — 丁巳年 (Fire Snake) 4614 or 4554 |
| Coptic calendar | 1633–1634 |
| Discordian calendar | 3083 |
| Ethiopian calendar | 1909–1910 |
| Hebrew calendar | 5677–5678 |
| Hindu calendars | |
| - Vikram Samvat | 1973–1974 |
| - Shaka Samvat | 1838–1839 |
| - Kali Yuga | 5017–5018 |
| Holocene calendar | 11917 |
| Igbo calendar | 917–918 |
| Iranian calendar | 1295–1296 |
| Islamic calendar | 1335–1336 |
| Japanese calendar | Taishō 6 (大正６年) |
| Javanese calendar | 1847–1848 |
| Juche calendar | 6 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4250 |
| Minguo calendar | ROC 6 民國6年 |
| Nanakshahi calendar | 449 |
| Thai solar calendar | 2459–2460 |
| Tibetan calendar | 阳火龙年 (male Fire-Dragon) 2043 or 1662 or 890 — to — 阴火蛇年 (female Fire-Snake) 2044 or 1663 or 891 |
1917 (MCMXVII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1917th year of the Common Era (CE) and Anno Domini (AD) designations, the 917th year of the 2nd millennium, the 17th year of the 20th century, and the 8th year of the 1910s decade. As of the start of 1917, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localized use until 1923.