XIII has been played over 10 times on NTS, first on 16 April 2015. XIII's music has been featured on 17 episodes.

There are several artists and groups performing under the name XIII.

XIII is a thrash metal band from Hull.

XIII is a gothic/doom metal band from Iceland, formed in 1994. The band released three full-length albums and one demo CD.

XIII is a nu metal band from Concord, California, founded in 2006 by vocalist and frontman Zeke XIII.

XIII is a rap artist from Middletown, Connecticut. He has released one song and a short clip of another. His influences include the Notorious B.I.G. and Tupac Shakur, and his style is associated with underground rap.

XIII is a sound artist from the Midwestern United States who has released material through the label Spinalchord.

XIII is a solo project name used by Dan Sanders, the frontman of Gyroscope, for a heavier and more aggressive style of music.