| artist,genre,country | |
| Q,Neo-Prog,Chile | |
| Q'UQ'UMATZ,Tech/Extreme Prog Metal,United States | |
| QANGO,Crossover Prog,United Kingdom | |
| QANTUM,Neo-Prog,France | |
| QIRSH,Rock Progressivo Italiano,Italy | |
| QOPH,Psychedelic/Space Rock,Sweden | |
| QRIXKUOR,Tech/Extreme Prog Metal,Multi-National | |
| QUADRA,Neo-Prog,France | |
| QUADRIVIUM,Tech/Extreme Prog Metal,Norway | |
| QUAESCHNING & SCHNAUSS,Progressive Electronic,Germany | |
| QUAKER,Eclectic Prog,Argentina | |
| QUALEACEANS,Experimental/Post Metal,United Kingdom | |
| QUALIA,Post Rock/Math rock,United Kingdom | |
| QUANAH PARKER,Crossover Prog,Italy | |
| QUANDARY,Progressive Metal,Australia | |
| QUANTUM,Symphonic Prog,Brazil | |
| QUANTUM,Heavy Prog,Sweden | |
| QUANTUM FANTAY,Psychedelic/Space Rock,Belgium | |
| QUANTUM JUMP,Canterbury Scene,United Kingdom | |
| QUANTUM PIG,Neo-Prog,United Kingdom | |
| QUANTUM SPHERE,Progressive Metal,United Kingdom | |
| QUARANTADUE,Experimental/Post Metal,Italy | |
| QUARK AEON,Crossover Prog,Canada | |
| QUARKS,Progressive Electronic,Chile | |
| QUARKSPACE,Psychedelic/Space Rock,United States | |
| QUARTET DIMINISHED,RIO/Avant-Prog,Iran | |
| QUARTETO 1111,Eclectic Prog,Portugal | |
| QUARTIK,Jazz Rock/Fusion,Canada | |
| UARTO FANTASMA,Post Rock/Math rock,Portugal | |
| QUARTO SENSORIAL,Jazz Rock/Fusion,Brazil | |
| QUARTO VUOTO,Rock Progressivo Italiano,Italy | |
| QUASAR,Jazz Rock/Fusion,Australia | |
| QUASAR,Neo-Prog,United Kingdom | |
| QUASAR H7,Progressive Metal,Italy | |
| QUASAR LUX SYMPHONIAE,Rock Progressivo Italiano,Italy | |
| QUASER,Jazz Rock/Fusion,Japan | |
| QÜASSI,Jazz Rock/Fusion,Argentina | |
| QUATEBRIGA,RIO/Avant-Prog,Yugoslavia | |
| QUATERMASS,Heavy Prog,United Kingdom | |
| QUATERNA REQUIEM (WIERMANN & VOGEL),Symphonic Prog,Brazil | |
| MICHAE UATRO,Crossover Prog,United States | |
| QUBE,Experimental/Post Metal,Poland | |
| QUEEN,Prog Related,United Kingdom | |
| QUEEN CRONY,RIO/Avant-Prog,United States | |
| QUEEN ELEPHANTINE,Psychedelic/Space Rock,United States | |
| QUEENSRYCHE,Progressive Metal,United States | |
| QUEL CHE DISSE IL TUONO,Rock Progressivo Italiano,Italy | |
| QUEL GIORNO DI UVE ROSSE,Rock Progressivo Italiano,Italy | |
| QUELLA VECCHIA LOCANDA,Rock Progressivo Italiano,Italy | |
| QUERCUNIAN CAMERATA,Symphonic Prog,Spain | |
| QUESO SAGRADO,Eclectic Prog,Mexico | |
| TH UEST,Neo-Prog,United Kingdom | |
| QUESTIONER,Experimental/Post Metal,United States | |
| ARNAU UEVEDO & FRIENDS,Eclectic Prog,France | |
| QUI,Jazz Rock/Fusion,Japan | |
| QUICKSAND,Prog Folk,United Kingdom | |
| QUIDAM,Neo-Prog,Poland | |
| QUIET CHILD,Crossover Prog,Australia | |
| QUIET EARTH,Neo-Prog,Germany | |
| TH UIET EARTH ORCHESTRA,Crossover Prog,United States | |
| TH UIET ROOM,Progressive Metal,United States | |
| QUIET SUN,Canterbury Scene,United Kingdom | |
| QUIET WORLD,Proto-Prog,United Kingdom | |
| QUILL,Symphonic Prog,United States | |
| QUILT,Eclectic Prog,Canada | |
| QUINTAL DE CLOROFILA,Prog Folk,Brazil | |
| QUINTESSENCE,Indo-Prog/Raga Rock,United Kingdom | |
| QUINTESSENZA,Progressive Metal,Italy | |
| QUINTETO ARMORIAL,Prog Folk,Brazil | |
| QUINTORIGO,RIO/Avant-Prog,Italy | |
| QUIRARTE CHRIS,Progressive Metal,United States | |
| QUMMA CONNECTION,Neo-Prog,Finland | |
| QUO VADIS,Tech/Extreme Prog Metal,Canada | |
| QUODIA,Eclectic Prog,United States | |
| QUORUM,Crossover Prog,Russia | |
| QUSTO,Tech/Extreme Prog Metal,Russia | |
| QWAARN,Neo-Prog,Canada | |