Yuki Kajiura (梶浦由記, Kajiura Yuki, born August 6, 1965) is a Japanese composer, arranger and music producer. She has provided the music for several popular anime series, such as Sword Art Online, Puella Magi Madoka Magica, Fate/Zero, The Garden of Sinners, Pandora Hearts and Demon Slayer: Kimetsu no Yaiba.

As a composer, Kajiura is known for her unique and distinctive musical motifs and leitmotifs, as well as for her distinctive fusion of contemporary classical music and electronic music.