1618 (MDCXVIII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1618th year of the Common Era (CE) and Anno Domini (AD) designations, the 618th year of the 2nd millennium, the 18th year of the 17th century, and the 9th year of the 1610s decade. As of the start of 1618, 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: 1580s  1590s  1600s  – 1610s –  1620s  1630s  1640s
Years: 1615 1616 161716181619 1620 1621
1618 in other calendars
Gregorian calendar1618
Ab urbe condita2371
Armenian calendar1067
Assyrian calendar6368
Balinese saka calendar1539–1540
Bengali calendar1025
Berber calendar2568
English Regnal year15 Ja. 1 – 16 Ja. 1
Buddhist calendar2162
Burmese calendar980
Byzantine calendar7126–7127
Chinese calendar丁巳(Fire Snake)
4314 or 4254
    — to —
戊午年 (Earth Horse)
4315 or 4255
Coptic calendar1334–1335
Discordian calendar2784
Ethiopian calendar1610–1611
Hebrew calendar5378–5379
Hindu calendars
 - Vikram Samvat1674–1675
 - Shaka Samvat1539–1540
 - Kali Yuga4718–4719
Holocene calendar11618
Igbo calendar618–619
Iranian calendar996–997
Islamic calendar1027–1028
Japanese calendarGenna 4
Javanese calendar1538–1539
Julian calendarGregorian minus 10 days
Korean calendar3951
Minguo calendar294 before ROC
Nanakshahi calendar150
Thai solar calendar2160–2161
Tibetan calendar阴火蛇年
(female Fire-Snake)
1744 or 1363 or 591
    — to —
(male Earth-Horse)
1745 or 1364 or 592