DO - What does DO stand for? The Free Dictionary DO: Day Off: DO: Data Out: DO: Due Out: DO: Delivery Order: DO: District Office: DO: Driver Only (train operated by the driver only) DO: Direct Object: DO: Duty Officer: DO: Digital Output: DO: Design Overview: DO: Development Officer: DO: Director Officer: DO: Dominican Republic: DO: Disorder: DO: Desk Officer (NYPD) DO: Dominica: DO: Diário Oficial (Official Gazette; Brazil) DO: Distributed Object: DO