- XFears (XFears)
- Xfruge
- XG (South Korea based Japanese girl group)
- Xhamain
- Xhelazz
- Xhulooo
- xi (Yusuke Ishiwata)
- Xi (Malawian Artist)
- xi feat.Sta
- Xia (Kim Jun Su / Xiah)
- XIA (South Korean singer)
- XIA feat. YDG
- Xiao (hardcore from Stockholm)
- Xiao, Zhan
- Xiaoloulou
- XIARA (German rapper)
- Xibalba (Hardcore/Death Metal)
- Xibling (synth duo)
- Xie (Female LA producer & singer)
- XII Thorns
- XIII. století
- Xiivan Young
- XIIVI (Artist from Tunis)
- XiJaro & Pitch with Adara
- XiJaro & Pitch with Silver, Ava
- xikers
- Xile (New Zealand hardcore)
- Xilent (producer Eryk Kowalczyk)
- Xilent feat. Diamond Eyes
- Xilent feat. Grimm
- Xilla (American rapper)
- Xillions
- XIMEUA
- xin
- Xindl X (Czech folk pop singer-songwriter)
- Xindl X feat. Jananas
- Xindl X feat. Lounová, Olga
- Xinlisupreme
- Xinobi
- Xinobi & João, Gisela
- XinU (Japanese singer)
- 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)
- Xiu Xiu (US experimental band)
- XIUMIN (EXO)
- Xiupill (Icelandic experimental pop trio)
- XIV Dark Centuries
- XiX (Hong Kong girl group)
- XIXA (Band (Brian Lopez and Gabriel Sullivan))
- xKhen (Lithuanian artist)
- xKINGx (Downtempo, Metal)
- xKore
- Xkrude
- XL5 (Finnish group)
- xLooking Forwardx
- XLR (french hip hop)
- Xlson137 (UA rapper)
- 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 purp
- XO TEAM
- XO Xuded
- XO‐IQ
- XO‐IQ feat. Slachta, John‐Alan
- XO, MoneyBaby & Reddy, PullUp
- XOAN
- XoBrooklynne
- XOC (Jason Cox)
- Xoch
- Xochimilcas, Los
- XODIAC (South Korean boy group)
- xojira
- Xolo (L.A.-based dream pop duo)
- Xolotl (USA, Black Metal)
- XOMG POP!
- Xomu
