|The Familiar of Zero: Knight of the Two Moons|
Zero no Tsukaima: Futatsuki no Kishi
|Directed by||Yū Kō|
|Original Run||9 July 2007 – 24 September 2007|
|Number of Episodes||12 (List of episodes)|
|Preceded by||The Familiar of Zero|
|Succeeded by||The Familiar of Zero: Return of the Princess|
The Familiar of Zero: Knight of the Two Moons (ゼロ・の・使い魔: 双月・の・騎士, Zero no Tsukaima: Futatsuki no Kishi) is the second season of The Familiar of Zero anime directed by Yū Kō which ran from 9 July 2007 to 24 September 2007. It was succeeded by The Familiar of Zero: Return of the Princess.
Louise de la Vallière's and Saito Hiraga's adventures continue as master and familiar spirit. More characters are met such as Agnès de Milan, Captain of the Tristain Musketeers, Julio Chesaré, a Shinto priest but an expert swordsman, Sheffield, the Governor of Albion and the season's main antagonist, the return of the revived Prince of Albion, and Tiffania Westwood, a "big-breasted" half-elf. Louise's older sisters are revealed to be Eléonore de la Vallière, Louise's eldest and strict sister, and Cattleya de la Fontaine, Louise's older and kind sister.