| Otto I, Count of Scheyern | |
| Noble Family: | House of Wittelsbach |
| Father: | Heinrich I, Count of Pegnitz |
| Mother: | unnamed daughter of Kuno I, Count of Altdorf |
| Spouse: | A daughter of Meginhardt of Reichersbeuern Haziga of Diessen |
| Issue: | Eckhard I Bernard I Otto II Arnold I |
| Death Date: | before 4 December 1072 |
| Death Place: | probably: Scheyern |
Otto I, Count of Scheyern (some authors call him Otto II of Scheyern; - before 4 December 1072) was the earliest known ancestor of the House of Wittelsbach whose relation with the House can be properly verified.
Most historians believe Otto was a younger son of Heinrich I, Count of Pegnitz and an unnamed daughter of Kuno I, Count of Altdorf.[1] He was appointed Vogt of Freising in Bavaria.[2] A document from 1073 calls him Latin: Comes de Skyrun, i.e. Count of Scheyern. Otto I died on December 4, 1072, while on a pilgrimage to Jerusalem.[2]
Otto was married twice.[2] His first wife was from Saxony but her given name has not been preserved.[2] About 1057, he married Haziga of Diessen, daughter of Count Friedrich of Diessen.[2]
Otto had 4 known children. By his first wife he had:
By his second wife, Haziga, he had 2 children: