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|Centuries:||11th century – 12th century – 13th century|
|Decades:||1160s 1170s 1180s – 1190s – 1200s 1210s 1220s|
|Years:||1195 1196 1197 – 1198 – 1199 1200 1201|
|1198 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1198 in poetry|
|Ab urbe condita||1951|
|English Regnal year||9 Ric. 1 – 10 Ric. 1|
— to —戊午年十二月初二日
|- Vikram Samvat||1254–1255|
|- Shaka Samvat||1120–1121|
|- Kali Yuga||4299–4300|
|- Ǹrí Ìgbò||198–199|
|Juche calendar||N/A (before 1912)|
|Julian calendar||1198 MCXCVIII|
|Minguo calendar||714 before ROC
|Thai solar calendar||1741|
|Wikimedia Commons has media related to: 1198|
By place 
- Emperor Tsuchimikado succeeds Emperor Go-Toba on the throne of Japan.
- July 14 – donation of Altavilla: Bohemond I, the new crusader ruler of Antioch grants commercial privileges and the right to use warehouses (fondaco) and the church of Saint John to the Republic of Genoa. This marks the beginning of Italian merchant settlements in the Levant.
- March – Philip of Swabia is elected King of Germany by his supporters.
- July – Otto of Brunswick[disambiguation needed] is crowned King of Germany by the House of Welf.
- Frederick II, infant son of German King Henry VI, is crowned King of Sicily.
- John of England captures a party of eighteen French knights & many men-at-arms in the ongoing conflict against France. King Richard I of England introduces a new Great Seal in an attempt to keep the war against France funded. The government proclaims that charters previously struck with the old seal are no longer valid and must be renewed with a fresh payment. The office of Lord Warden of the Stannaries is also introduced to tax the produce of tin mines in Cornwall and Devon.
By topic 
- January 8 – Pope Innocent III succeeds Pope Celestine III as the 176th pope. He immediately lays an interdict on Laon in an attempt to stamp out independent beliefs there. This will be followed by interdicts against France in 1199 and Normandy in 1203.
- August 24 – King Alexander II of Scotland (d. 1249)
- date unknown
- January 8 – Pope Celestine III (b. c. 1106)
- March 11 – Marie de Champagne, daughter of Louis VII of France (b. 1145)
- April 16 – Duke Frederick I of Austria (b. c. 1175)
- June 2 – Lord Ygo III of Galama, Frisian knight and nobleman (b. 1139)
- September 1 – Dulce, Queen of Portugal, wife of King Sancho I of Portugal (b. 1160)
- November 27 – Queen Constance of Sicily, wife of Henry VI, Holy Roman Emperor (b. 1154)
- December 11 – Averroes, Arab philosopher and physician (b. 1126)
- date unknown
- Benvenuti, Gino (1985). Le Repubbliche Marinare. Amalfi, Pisa, Genova e Venezia. Rome: Newton & Compton Editori. p. 34. ISBN 88-8289-529-7.
- King John by Warren. Published by University of California Press in 1961. p. 47
- King John by Warren. Published by University of California Press in 1961. p. 62
- King John by Warren. Published by University of California Press in 1961. p. 124