Jacopo Tiepolo

Jacopo Tiepolo
Portrait by Domenico Tintoretto, late-16th-century
Doge of Venice
In office 1229–1249
Preceded by	Pietro Ziani
Succeeded by	Marino Morosini
Podestà of Constantinople
In office 1218–1220 1223–1224 (?)
1st Duke of Crete
In office 1209–1214
Succeeded by	Pietro Querini
Personal details
Born	shortly before 1170 Venice, Republic of Venice
Died	19 July 1249 (aged c. 78–79) Venice, Republic of Venice
Spouses	Maria Storlato ​ (died 1240)​ Valdrada of Sicily ​ ​ (m. 1242⁠–⁠1249)​
Children	Lorenzo, Giovanni, and 4 others

Jacopo Tiepolo (shortly before 1170 – 19 July 1249), also known as Giacomo Tiepolo, was Doge of Venice from 1229 to 1249. He had previously served as the first Venetian Duke of Crete, and two terms as Podestà of Constantinople, twice as governor of Treviso, and three times as ambassador to the Holy See. His dogate was marked by major domestic reforms, including the codification of civil law and the establishment of the Venetian Senate, but also against a mounting conflict with Emperor Frederick II, which broke into open war from 1237 to 1245.