Posted in Aviation, Business & Finance, Government & Military, Internet Slang, Pop Culture, Science DY stands for Day DY stands for Norwegian Air Shuttle (airline code) DY stands for Directory DY stands for Duty DY stands for Do You… DY stands for Daddy Yankee (reggaeton musician) DY stands for Derry (Ireland) DY stands for Dysprosium DY stands for Dudley (postcode, United Kingdom) DY stands for Dividend Yield DY stands for Died Young (genealogy) DY