Sisebut (Latin: Sisebutus;[1] Spanish: Sisebuto; also Sisebuth, Sisebur, Sisebod or Sigebut; c. 565 – February 621) was King of the Visigoths and ruler of Hispania, Gallaecia, and Septimania from 612 until his death in 621.

[2] Nonetheless, it can be said that, during his reign, Sisebut campaigned successfully against the remnants of Byzantine power in Spania, strengthened Visigothic control over the Basques and Cantabrians, developed friendly relations with the Lombards of Italy, and reinforced the fleet that had been established by his predecessor, Leovigild.

Actions taken against Jews were part of a broader "legal tradition of imperial legislation" that even had the "approval of the Church Fathers," according to historian Herwig Wolfram.

[7] Aside from oppressing religious groups, Sisebut demonstrated his adherence to his Christian faith by officially consecrating churches, such as the martyrial basilica St. Leocadia in 618 at Toledo.

"[9] Historian Chris Wickham mentions the letters and poetry of Sisebut, comparing him with Alfred the Great for having a reputation as a writer, but adds that aside from this and his persecution of "the Jewish population in Spain", he was "otherwise undistinguished.