DQ may stand for:
- Disqualification (boxing)
- Dairy Queen, a fast food chain
- Dan Quayle, an American politician
- Data quality
- DQ (artist), a Danish singer, participant in Eurovision Song Contest 2007
- Dragon Quest (formerly known as Dragon Warrior in North America), a series of console role-playing games created by Enix (now Square Enix)
- DragonQuest, a role-playing game created by SPI
- Drama Queen, see histrionic personality disorder
- Dressage Queen, a stereotyped subgroup of horse enthusiast
- the Jarvis Island FIPS PUB 10-4 territory code
- a Human leukocyte antigen type HLA DQ encoded by the HLA DQA1 & DQB1 loci
- The IATA code for Coastal Air Transport
- Directory enquiries (Directory assistance), a service that provides telephone directory assistance
- Double-ended queue