9Q

9Q or 9-Q may refer to:


 * 9Q, IATA code for PBair
 * 9Q, Aircraft registration for the Democratic Republic of the Congo
 * 9q, an arm of Chromosome 9 (human)
 * 9Q, designation for one of the Qumran Caves
 * GCR Class 9Q, a class of British 4-6-0 steam locomotive