Crimson Demon

Crimson Demon may refer to:
 * Sanada Yukimura (1567–1615), Japanese samurai nicknamed the "Crimson Demon of War"
 * The Blood Demon, a 1967 West German horror film, advertised in Rhode Island newspapers as Crimson Demon
 * Crimson Demon, a fictional character in the video game BloodRayne: Betrayal
 * Crimson Demons, fictional characters in the light novel series KonoSuba
 * Crimson Demon, a fictional character in the television series Mighty Med
 * Crimson Demons, fictional caracters in the video game The Seven Deadly Sins: Grand Cross