Wiho I was a figure identified as the inaugural bishop of the Diocese of Osnabrück. Although traditionally recognized as a Catholic saint, historical evidence suggests he may not have existed. His presence in the historical record stems from two documents dated 803 and 804, which were later identified as 11th-century forgeries. These documents were likely created during a period of dispute regarding tithes under Bishop Benno II to establish historical legitimacy for the diocese.