- Xindl X s Gott, Karel
- Xingfoo&Roy
- XINK (Belgian teen pop/punk band)
- Xinlisupreme
- Xinobi
- Xinobi & João, Gisela
- Xinobi feat. Vaarwell
- XinU (Japanese singer)
- XINXIN (indie r&b quartet)
- Xion
- Xiong, Howard
- Xiong, Pagnia
- Xipe Totec (Death Metal band from Mexico)
- Xiphea
- Xique-Xique (DJ/producer duo Dunwich & Biba Graeff)
- Xirita (Low‐Fi Electronic, Alternative & R’n’B‐Pop)
- Xis
- XisForEyes
- XIT (native American rock band)
- Xitsuh
- Xiu Xiu (US experimental band)
- Xiu Xiu feat. Gira, Michael
- xiula
- XIUMIN (EXO)
- Xiupill (Icelandic experimental pop trio)
- XIV Dark Centuries
- Xiwon, Kang (South Korean Rapper)
- XiX (Hong Kong girl group)
- XIXA (Band (Brian Lopez and Gabriel Sullivan))
- XIXTENTASH (XIXTENTASH)
- Xiyo, Fernandezz, Yung Beef & Quevedo
- xJK.
- XK Scenario
- xKhen (Lithuanian artist)
- xKINGx (Downtempo, Metal)
- xKore
- Xkrude
- Xkylar
- XL5 (Finnish group)
- xLight Your Anchorx
- xLooking Forwardx
- XLOV
- XLR (french hip hop)
- XLR8 (Filipino band)
- Xlson137 (Russian rapper)
- XLVR
- XM, Antonia (runs Ashida Park label)
- Xmal Deutschland
- XMASwu
- XMawja (software engineer)
- xMeans to an Endx (Hardcore from Winnipeg)
- Xnghan&Xoul
- xNOMADx (vegan edge metal from the northeast)
- xnti
- XO (US rapper, member of Diamond District, aka Uptown XO)
- XO (Californian rock band)
- XO (California shoegaze band)
- xo (electropop artist)
- XO (British girl group)
- Xo Man
- Xo Mo
- xo purp
- xo purp & nash.ovi
- xo sad
- xo sad & unheard
- XO TEAM
- XO Xuded
- XO-IX
- XO‐IQ
- XO‐IQ feat. Slachta, John‐Alan
- XO, MoneyBaby & Reddy, PullUp
- XO, Noah
- XO1
- XO1 & mawrody
- XOAN
- Xoán Curiel
- XoBrooklynne
- Xoch
- Xochimilcas, Los
- XODIAC (South Korean boy group)
- xofilo (Hyperpop artist)
- xofilo & 1Psion
- xofilo & Mutatty
- XoForbidden
- XoForbidden, Wames, James
- xojira
- Xolidayboy
- xolilsauce feat. Caine$tiff
- Xolo (L.A.-based dream pop duo)
- Xolotl (USA, Black Metal)
