Kujira could refer to:
- Kujira Kurokami, better known as Youka Naze, a former member of the Flask Plan, the current vice-president of the Student Council, and the middle child of the Kurokami siblings.
- My Older Sister Kurokami Kujira, the seventy-sixth chapter of the Medaka Box manga.
- Volume 9: My Older Sister Kurokami Kujira, the ninth volume of the Medaka Box manga.
- The Lovely Name Kurokami Kujira, the nineteenth episode of the Medaka Box anime.