- XLOV
- XLR (french hip hop)
- Xlson137 (UA rapper)
- XM, Antonia (runs Ashida Park label)
- Xmal Deutschland
- XMASwu
- XMawja (software engineer)
- xMeans to an Endx (Hardcore from Winnipeg)
- XMH
- xNOMADx (Vegan Edge Metal from the Northeast)
- XO (US rapper, member of Diamond District, aka Uptown XO)
- XO (Californian rock band)
- XO (Producer, Staffordshire, UK)
- XO (California shoegaze band)
- xo (electropop artist)
- xo purp
- XO TEAM
- XO Xuded
- XO‐IQ
- XO‐IQ feat. Slachta, John‐Alan
- XO, MoneyBaby & Reddy, PullUp
- XOAN
- Xoán Curiel
- XoBrooklynne
- XOC (Jason Cox)
- Xoch
- Xochimilcas, Los
- XODIAC (South Korean boy group)
- XoForbidden
- xojira
- Xolo (L.A.-based dream pop duo)
- Xolotl (USA, Black Metal)
- XOMG POP!
- Xomu
- XONOR
- xooos
- XOR (US electronic musician from Asheville, NC)
- Xorcist
- Xordia
- Xori
- Xose Lois Romero & Aliboria
- xotox
- XOV (Swedish singer-songwriter)
- XOXO's, The
- Xoxocapa, Trío
- XP Voodoo
- XP-30
- XP8
- Xpansions (known for ‘Move Your Body’)
- Xpansions 95 (AKA Xpansions)
- XPDC
- Xperience (US rapper, a.k.a. XP)
- Xperiment (aggrotech band from Spain)
- Xploding Plastix
- Xploding Plastix feat. Cracknell, Sarah
- Xplore Yesterday
- Xplosn (edm artist)
- XPQ-21
- xPropaganda (Claudia Brücken und Susanne Freytag, former 'Propaganda')
- Xquizit, DJ
- Xquizit, DJ feat. Hilberts, Tim
- XRaidX
- Xramovi, Misha
- XRay5, The (LA post-punk band)
- XReal
- xRepentancex
- xRepresentx (American straight edge hardcore band)
- Xriz
- XRP Bags
- XS Project
- XS Project & Life of Boris
- XSakara
- XSARA
- Xscape
- xServitudex
- XSI (Psytrance project from France)
- XSOLEIL (NIJISANJI EN VTuber group)
- Xstasia
- XT
- Xtatik
- XTC (English rock band)
- Xtha
- xthedoc
- xthedoc feat. Jordan Parat
- XTIE (Hong Kong Solo Artist)
- xtinto (Portuguese Rapper)
- XTM (Catalan dance music act;Brothers Xasqui and Toni Ten)
- XTM & Chucky, DJ
- XTM & DJ Chucky
- Xtortion Audio
