Ralph Wolf is a fictional character appearing in the Looney Tunes Ralph Wolf-Sam Sheepdog cartoons.

At the beginning of each day, Ralph and Sam go to the meadow where the sheep graze, exchange chit-chat and punch in to the same time clock. Once the work day begins, Ralph repeatedly tries to abduct the helpless sheep and invariably fails, either through his own ineptitude or the minimal efforts of Sam. At the end of the day, Sam and Ralph punch out their time cards, chat amiably and leave, only to come back the next day and do it all again.

Ralph has the same character design as Wile E. Coyote (but with a red nose), and shares the same appetite, fanatical persistence and use of Acme Corporation products. However, he covets sheep instead of road runners and, when he speaks, doesn't have the upper-class accent or the ego.