1639 (MDCXXXIX) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1639th year of the Common Era (CE) and Anno Domini (AD) designations, the 639th year of the 2nd millennium, the 39th year of the 17th century, and the 10th and last year of the 1630s decade. As of the start of 1639, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium: 2nd millennium
Centuries: 16th century17th century18th century
Decades: 1600s  1610s  1620s  – 1630s –  1640s  1650s  1660s
Years: 1636 1637 163816391640 1641 1642
1639 in other calendars
Gregorian calendar1639
Ab urbe condita2392
Armenian calendar1088
Assyrian calendar6389
Balinese saka calendar1560–1561
Bengali calendar1046
Berber calendar2589
English Regnal year14 Cha. 1 – 15 Cha. 1
Buddhist calendar2183
Burmese calendar1001
Byzantine calendar7147–7148
Chinese calendar戊寅(Earth Tiger)
4335 or 4275
    — to —
己卯年 (Earth Rabbit)
4336 or 4276
Coptic calendar1355–1356
Discordian calendar2805
Ethiopian calendar1631–1632
Hebrew calendar5399–5400
Hindu calendars
 - Vikram Samvat1695–1696
 - Shaka Samvat1560–1561
 - Kali Yuga4739–4740
Holocene calendar11639
Igbo calendar639–640
Iranian calendar1017–1018
Islamic calendar1048–1049
Japanese calendarKan'ei 16
Javanese calendar1560–1561
Julian calendarGregorian minus 10 days
Korean calendar3972
Minguo calendar273 before ROC
Nanakshahi calendar171
Thai solar calendar2181–2182
Tibetan calendar阳土虎年
(male Earth-Tiger)
1765 or 1384 or 612
    — to —
(female Earth-Rabbit)
1766 or 1385 or 613

Events change