X-Calibur is a heavy metal band from Neuchatel, Switzerland, formed in 2018. They play classic-style heavy metal with a strong emphasis on powerful riffs and anthemic songwriting in the tradition of European heavy metal.

Xanax is a heavy metal and hard rock band from Spytihnev, Czech Republic, active since 2005. Drawing their name and aesthetic from pharmaceutical culture, they deliver hard-hitting traditional metal with a hard rock edge, carving out a niche in the Czech metal scene over nearly two decades.

Xero is a NWOBHM-influenced heavy metal band from London, England, originally formed in the early 2000s. They carry the spirit of the New Wave of British Heavy Metal forward with raw, guitar-driven compositions that honor the genre's classic sound.

Xes is a heavy metal band from Genk, Belgium, formed in 2019. They carry the torch of classic heavy metal with straightforward riffs and traditional song structures rooted in the Belgian metal underground.

XIII Doors is a melodic groove/heavy metal band from Shannon, Ireland, formed in 2023. They describe themselves as a hard rock/metal band from Ireland, releasing tracks like "Into The Unknown" and "Unleash The Beast" that blend heavy riffs with accessible, hard-hitting melodies.

Xipe is a heavy metal band from Vicenza, Italy, formed in 2022. They play traditional heavy metal rooted in the Italian metal tradition, delivering powerful riffs and classic song structures from the Veneto region of northeastern Italy.

XT is a heavy metal band from Gothenburg, Sweden, formed in 2017. Evolving from earlier melodic hard rock roots into heavier territory, they carry on the grand tradition of Gothenburg's metal scene, one of the most storied metal cities in the world.

XXX is a heavy metal and hard rock band from Geneva, Switzerland, formed in 2015. They blend the swagger of hard rock with the punch of heavy metal, delivering high-energy performances rooted in the Swiss hard rock and metal tradition.