RQ

RQ may refer to:

• RQ series, a reconnaissance unmanned aerial vehicle designator of the United States Defense Department
• Kam Air (IATA designator RQ)
• Puerto Rico (FIPS 10-4 country code RQ)
• Reference Quarterly
• Renaissance Quarterly, a scholarly journal published by the Renaissance Society of America
• Respiratory quotient, used in calculations of basal metabolic rate
• RuneQuest, a role-playing game
• Research question, the formulation of which is often the first step in a research process