Airlines — Q
- QNTQanot Sharq
- QFAQantas
- QACQatar Air Cargo
- QTRQatar Airways
- QAFQatar Amiri Flight
- QAXQatXpress
- IRQQeshm Air
- QTXQuantex Environmental
- QUEQuebec Government Air Service
- QNAQueen Air
- LBQQuest Diagnostics
- QAJQuick Air Jet Charter
- QAHQuick Airways Holland
- QASQuisqueya Airlines
- QAQQurinea Air Service
- QCCQwest Commuter Corporation
- QWAQwestair
- QWLQwila Air