An oil filter wrench includes a base, a main rotating body, a ratcheting drive portion, a limiting mechanism, at least three rotating members and at least three claws. The main rotating portion is rotatably assembled with the body including a drive portion operable from outside. The ratcheting drive portion includes a ratcheting disk rotatably mounted with the main rotating portion and a main gear engaged with the ratcheting disk. The limiting mechanism includes at least one ratcheting member movably disposed on the main rotating body and including at least one tooth selectively engaged with the ratcheting disk. The rotating members axially pivoted to the base are arranged around an axis of the base. Each rotating member includes a passive gear portion engaged with the main gear and rotatable about a central axis. The claws connected to the rotating members are movable around corresponding central axis respectively.