From Infogalactic: the planetary knowledge core
|Centuries:||12th century – 13th century – 14th century|
|Decades:||1200s 1210s 1220s – 1230s – 1240s 1250s 1260s|
|Years:||1234 1235 1236 – 1237 – 1238 1239 1240|
|1237 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1237 in poetry|
|Ab urbe condita||1990|
|English Regnal year||21 Hen. 3 – 22 Hen. 3|
|Chinese calendar||丙申年 (Fire Monkey)
3933 or 3873
— to —
丁酉年 (Fire Rooster)
3934 or 3874
|- Vikram Samvat||1293–1294|
|- Shaka Samvat||1159–1160|
|- Kali Yuga||4338–4339|
|Japanese calendar||Katei 3
|Minguo calendar||675 before ROC
|Thai solar calendar||1779–1780|
|Wikimedia Commons has media related to 1237.|
Year 1237 (MCCXXXVII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.
- Thomas II of Savoy becomes count of Flanders.
- Elbing is founded in the State of the Teutonic Order. Today Elbląg in Poland.
- After turning aside south for 15 years to invade the Caucasus, Asia Minor and Persia—united now under Batu Khan with representatives of all 4 khanates leading 150,000 Mongol, Turkish and Persian troops into Europe, resume the European invasion with the resumption of Mongol invasion of Rus' foreshadowed by.
- December 21 – Mongol invasion of Rus': Sack of Ryazan.
- Gualdo Tadino, Italy, is destroyed by fire.
- The County of Artois is founded in France.
- Baldwin II becomes Latin Emperor of Constantinople.
- Conrad IV of Germany becomes King of Germany.
- Livonian Crusade: After their defeat in the Battle of Saule, the Livonian Brothers of the Sword are absorbed into the Teutonic Order as the autonomous Livonian Order. Beginning of Estonian rebellion on Saaremaa island.
- Battle of Cortenuova: Frederick II, Holy Roman Emperor defeats the Lombard League.
- A major fire destroys some 30,000 dwellings in the Chinese capital city of Hangzhou.
- September 25 – England and Scotland sign the Treaty of York, establishing the location of their common border.
- Bohemond VI of Antioch, ruler of the principality of Antioch
- February 2 – Joan, Lady of Wales
- April 15 – Richard Poore, English ecclesiastic
- June 6 – John de Scotia, 9th Earl of Huntingdon
- probable – Pons de Capduelh, French troubadour