A hook keeper configured to be mounted on a fishing reel includes a locking part and a holding part. The locking part includes a locking portion, a hole penetrating the locking portion and a slit extending from the hole to an outside surface of the locking part and extending from a first end surface to a second end surface of the locking part in a central axial direction of the hole. The holding part is configured to hold the locking part and has a joining part configured to mount the holding part on the fishing reel.