小泉红子，日本漫画《魔术快斗》《名侦探柯南》中的角色之一，拥有神秘气质的魔女，赤魔法的正统继承人，同时是江古田高中二年级B班的转学生，黑羽快斗、中森青子、白马探等人的同班同学。
Akako Koizumi (小泉 紅子 Koizumi Akako?) is a character from Magic Kaito, who also appeared in the anime of Detective Conan and in Hanzawa the Criminal. She's a witch of 17 years who is well-versed in black and red magic and tries to steal the hearts of all the men in the world, but fails to do so concerning her main target, the Kaitou Kid. She's currently attending class 2-B of Ekoda High School.