|Ab urbe condita||1953|
|Balinese saka calendar||1121–1122|
|English Regnal year||1 Joh. 1 – 2 Joh. 1|
|Chinese calendar||己未年 (Earth Goat)|
3896 or 3836
— to —
庚申年 (Metal Monkey)
3897 or 3837
|- Vikram Samvat||1256–1257|
|- Shaka Samvat||1121–1122|
|- Kali Yuga||4300–4301|
|Japanese calendar||Shōji 2|
|Minguo calendar||712 before ROC|
|Thai solar calendar||1742–1743|
1326 or 945 or 173
— to —
1327 or 946 or 174
|Wikimedia Commons has media related to 1200.|
- August 25 – After touring an army through Aquitaine to assert his right to it, John of England marries Isabella of Angoulême at Bordeaux.
- The Iroquois invade modern-day Ohio from the north.
- The Mongols defeat Northern China.
- The University of Paris receives its charter, from Philip II of France.
- The rebel Ivanko is captured and executed, by the Byzantine general Alexios Palaiologos.
- The Cherokee and Catawba tribes fight a great battle, in the Brown Mountains of modern day North Carolina.
- January 19 – Dōgen Zenji, founder of Sōtō Zen (d. 1253)
- exact date unknown
- Ulrich von Liechtenstein, German nobleman and poet (d. 1278)
- Adam Marsh, English Franciscan scholar and theologian (approximate date; d. 1259)
- Matthew Paris, English Benedictine monk and chronicler (approximate date; d. 1259)
- Rabbi Isaac ben Moses of Vienna (d. 1270)
- Mindaugas, Great King of Lithuania (approximate date; d. 1263)
- William of Sherwood, English logician (approximate date; d. c.1272)
- April 8 – Adalbert III of Bohemia, archbishop (b. 1145)
- April 23 – Zhu Xi, Chinese Confucian philosopher (b. 1130)
- September 17? – Emperor Guangzong of Song (b. 1147) 
- December – Gilbert Horal, 12th Grand Master of the Knights Templar
- date unknown – Odo of Canterbury, theologian and abbot of Battle (date of birth unknown)