Iwo Odrowąż (between 1170 and 1180, Końskie - August 21st 1229, close to Modena) was Chancelier of Lech Ier the White (1206 - 1218) and bishop of Cracow (starting from 1218).

Throughout its life, it tied many relations with the intellectuals of Central Europe. Chancellor of Lech Ier the White, it encouraged the reforms of the Pape Innocent III. In 1215, it took part in the Concile of Lateran IV, in company of the archbishop Henri Kietlicz.

In 1218, he became bishop of Cracow, succeeding Vincent Kadlubek. One year later, it pushed back the offer of the Pape Honore III which wanted to appoint it archbishop of Gniezno. In 1222, on the initiative of Iwo Odrowąż, the Dominican order settled in Poland. After the death of Lech Ier the White, it supported Henri Ier Bearded the against Conrad Ier de Mazovie which disputed the throne of Cracow. He encouraged also the colonization of the grounds belonging to évêché of Cracow. In 1227, it founded in Cracow the first parochial school of Poland.

He died the August 21st 1229 at the time of a voyage in Italy. Its skin was brought back to Poland by Dominicains and it is buried in Cracow, in the church of the Holy Trinity. It left an important library.