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| Kaipa | Notes From the Past | Prog | |
| Kaipa | Keyholder | Prog | |
| Kaipa | Mindrevolutions | Prog | |
| Kaipa | The Decca Years | Prog | |
| Kaipa | Angling Feelings | Prog | |
| Kajiyama Turner | Fire Without Flame | Hard Rock | |
| Kalo | Spiral Dream | Prog | |
| Kamelot | One Cold Winter's Night | Heavy Metal | |
| Kamelot | Ghost Opera, the Second Coming | new | Heavy Metal |
| Kampec Dolores | Earth Mother Sky Father | World Music | |
| Kansas | Device Voice Drum | Prog | |
| Karelia | Raise | Heavy Metal | |
| Kari | Pilot | Pop | |
| Kari Rueslatten | Other People's Stories | Pop | |
| Karizma | Document | Fusion | |
| Karmakanic | Entering the Spectra | Prog | |
| Karmakanic | Wheel of Life | Prog | |
| Karo | Heavy Birthday | Hard Rock | |
| Katsionis Bob | Turn On My Century | Virtuoso | |
| Katsionis Bob | Imaginary Force | Virtuoso | |
| KBB | Lost and Found | Prog | |
| KBB | Four Corner's Sky | Prog | |
| KBB | Live 2004 | Prog | |
| KBB | Proof of Concept | Prog | |
| Keagy Kelly | I'm Alive | AOR | |
| Keen of the Crow | Hyborea | Death Metal | |
| Keep Of Kalessin | Kolossus | new | Black Metal |
| Ken's Novel | Oblivion Domain | Prog | |
| Kerrs Pink | Tidings | Prog | |
| Khallice | The Journey | Prog Metal | |
| Khymera | Khymera | AOR | |
| Khymera | A New Promise | AOR | |
| Khymera | The Greatest Wonder | AOR | |
| Kick Axe | Rock the World | Hard Rock | |
| Kill The Romance | Take Another Life | Death Metal | |
| Killed By The Bull | 1 + The Princess Rides the Bull... | Punk | |
| King Crimson | Lark's Tongues In Aspic | Prog | |
| King Crimson | Happy With What You Have... | Prog | |
| King Crimson | The Power To Believe | Prog | |
| King's X | Black Like Sunday | Hard Rock | |
| King's X | Live All Over the Place | Hard Rock | |
| King's X | Ogre Tones | Hard Rock | |
| King's X | XV | new | Hard Rock |
| Kingdom Come | Perpetual | Hard Rock | |
| Kino | Picture | Prog | |
| Kinzokuebisu |
Hakootoko |
Prog | |
| Kinzokuebisu | Momijigari | Prog | |
| Kiske Michael | Istant Clarity | Heavy Metal | |
| Kiske Michael | Kiske | Pop Rock | |
| Kiske Michael | Past in Different Ways | new | Rock |
| Klimt 1918 | Just in Case We’ll Never Meet Again | new | Gothic |
| Knight Area | The Sun Also Rises | Prog | |
| Knight Area | Under a New Sign | Prog | |
| Koch Greg | The Grip | Rock Blues | |
| Koch Greg | Radio Free Gristle | Guitar | |
| Koch Greg | 13 x 12 | Rock Blues | |
| Koiné | Sospeso | Rock Italiano | |
| Korova | Dead Like An Angel | Extreme Metal | |
| Korova Milk Bar | Korova Milk Bar | Prog | |
| Korovakill | Waterhells | Extreme Metal | |
| Korpiklaani | Tervaskanto | Folk Metal | |
| Kosmos | Kosmos | Space Rock | |
| Kotebel | Mysticae Visiones | Prog | |
| Kotebel | Fragments of Light | Prog | |
| Kotebel | Omphalos | Prog | |
| Kotzen Richie | Slow | Virtuoso | |
| Kotzen Richie | Change | Virtuoso | |
| Kotzen Richie | Into the Black | Virtuoso | |
| Kragens | Seeds of Pain | Heavy Metal | |
| Kramdens | Quiet Collision | Rock | |
| Krisalide | Krisalide | Hard Rock | |
| Krux | Krux | Dark Rock | |
| Krys | Black Cat | Hard Rock | |
| Kunita Daisuke | Fuzzy Logic | Virtuoso | |
| Kuprij Vitalij | Forward and Beyond | Virtuoso | |
| Kuprij Vitalij | Glacial Inferno & Revenge | Virtuoso | |
| Kurgan's Bane | The Future Lies Broken | Prog | |
| Kvazar | Kvazar | Prog | |
| Kvazar | A Giant's Lullaby | Prog | |
| KZL333 | The Naked | Post Punk |