Saint Otto

Saint Otto or Blessed Otto may refer to:

• Saint Ottone Frangipane (died 1127), Italian monk and hermit
• Saint Otto of Bamberg (died 1139), German missionary and bishop
• Blessed Otto of Freising (died 1158), German bishop and historian
• Saint Otto [it] (died 1220), Franciscan martyred in Morocco with four companions
• Blessed Otto Neururer (1882–1940), Austrian priest who died in a Nazi concentration camp