- Qaelian by Enrique Gamez (132 features)
- Qahta by krinnen (50 features)
- Qhirem by W (139 features)
- Qichiuqtluq by Tengado (21 features)
- Qi (Irfikian Language) by Andrew D Wood (12 features)
- Qimbar by Bryony (43 features)
- Qinuith by Kenner Gordon (34 features)
- Qitatyattas by k1234567890y (116 features)
- Q'oligo by k1234567890y (80 features)
- Qorolese by Lachlan, Louise (70 features)
- Qraa by Bryony (44 features)
- Qrai by sufferingfromentropy (51 features)
- Q.T. Lingua Franca by k1234567890y (131 features)
- Qttx by A Walker Scott (3 features)
- Qucheanya by Faiuwle (93 features)
- Quenya by J. R. R. Tolkien (133 features)
- Qwynegold by Qwynegold (77 features)
- Qþyn|gài by Henrik Theiling (125 features)