Kei

Kei may refer to:
* Kei Nanjo, a party member in Megami Ibunroku Persona and Persona 2: Eternal Punishment.
* Kei Sagami, the heroine of Maken X.
* Kei Azuma, the protagonist of Shin Megami Tensei NINE.
* Kei Minase, a character from Quantum Devil Saga: Avatar Tuner.