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 Berard, Otto, Peter, Accursius and Adjutus (died 1220), Franciscan martyred in Morocco with four companions
 * Blessed Otto Neururer (1882–1940), Austrian priest who died in a Nazi concentration camp