Odo \o-do\ as a boy's name. Variant of Otto (Old German) "wealth". The -o ending is usually found in German or Scandinavian names. Saint Odo was a ninth-century French saint who was abbott at the famous monastery of Cluny.
Baby names that sound like Odo are Ado, Ido and Udo. Other similar baby names are Odon and Oro.