Otto I (bishop of Utrecht)
Otto I (died 18 September 1150) was Bishop of Utrecht from 1127 until his death.
Otto was a son of Count Conrad I of Zutphen and Mathilde of Beichlingen. He was initially provost of the church of St. Peter in Utrecht before his election as bishop.
His episcopate was marked by ongoing struggles for power and influence, particularly with the County of Holland and the citizens of Utrecht. He faced challenges from the growing independence of the city and the ambitions of the counts to extend their control over the diocese.
Otto's reign saw periods of both conflict and relative peace. He sought to maintain the temporal power of the bishopric, but faced increasing resistance from emerging secular forces. He participated in imperial politics, siding with Lothair III and later Conrad III.
Otto oversaw the construction and renovation of several churches and ecclesiastical buildings in the diocese. He is remembered for his efforts to preserve the rights and properties of the Church of Utrecht amidst challenging political circumstances. His successor was Herman of Horn.