1226 (MCCXXVI) was a common year starting on Thursday of the Julian calendar, the 1226th year of the Common Era (CE) and Anno Domini (AD) designations, the 226th year of the 2nd millennium, the 26th year of the 13th century, and the 7th year of the 1220s decade. As of the start of 1226, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 2nd millennium
Centuries: 12th century13th century14th century
Decades: 1190s  1200s  1210s  – 1220s –  1230s  1240s  1250s
Years: 1223 1224 122512261227 1228 1229
1226 in other calendars
Gregorian calendar1226
Ab urbe condita1979
Armenian calendar675
Assyrian calendar5976
Balinese saka calendar1147–1148
Bengali calendar633
Berber calendar2176
English Regnal year10 Hen. 3 – 11 Hen. 3
Buddhist calendar1770
Burmese calendar588
Byzantine calendar6734–6735
Chinese calendar乙酉(Wood Rooster)
3922 or 3862
    — to —
丙戌年 (Fire Dog)
3923 or 3863
Coptic calendar942–943
Discordian calendar2392
Ethiopian calendar1218–1219
Hebrew calendar4986–4987
Hindu calendars
 - Vikram Samvat1282–1283
 - Shaka Samvat1147–1148
 - Kali Yuga4326–4327
Holocene calendar11226
Igbo calendar226–227
Iranian calendar604–605
Islamic calendar622–624
Japanese calendarKaroku 2
Javanese calendar1134–1135
Julian calendar1226
Korean calendar3559
Minguo calendar686 before ROC
Nanakshahi calendar−242
Thai solar calendar1768–1769
Tibetan calendar阴木鸡年
(female Wood-Rooster)
1352 or 971 or 199
    — to —
(male Fire-Dog)
1353 or 972 or 200