- 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 stands for Design Year
- DY stands for Drell-Yan
- DY stands for Dynamotor
- DY stands for Air Djibouti (airline code)
- DY stands for Deliciouslyorkshire (UK food industry award)
DY