Sheep Ahoy is a 1954 Warner Bros. Merrie Melodies cartoon directed by Chuck Jones. The short was released on December 11, 1954, and stars Ralph Wolf and Sam Sheepdog.

Mel Blanc provided for the voices of all the characters in this cartoon, however, like all Sam Wolf and Ralph Sheepdog shorts, this short is mostly composed of visual gags.

This is the second short featuring Ralph Wolf and Sam Sheepdog. The title is a play on the phrase "Ship ahoy!"

This story revolves around Ralph Wolf (here named George) trying to steal the sheep guarded by Sam Sheepdog (here called Fred), who has just exchanged shifts with co-worker Fred Sheepdog (here called Ralph). As Ralph runs off with a sheep, Sam pushes a rock over the ledge, which falls on the wolf's head. Ralph promptly lets the sheep go before falling over in a daze, a lump consequently growing on his head.

1. Ralph first attempts to drop a large boulder on Sam, but a tree branch catches the boulder and propels it upwards again as it crushes Ralph.

2. Ralph then tries to pole vault over Sam, but Sam grabs the pole, lowers it over the edge until Ralph is eye level with Sam, and punches him in the face.

3. Ralph surrounds himself with a cloud of smoke from an Acme smoke bomb to avoid detection. However, Sam, having headed him off at the pass, drops a stick of dynamite in his smoke cloud, blowing Ralph up. Ralph stumbles backwards uncoordinated and, unable to watch where he's going, falls off a log perched above a cliff.

4. Ralph uses an Acme disguise, an artificial rock, but Sam isn't fooled; he pulls out a sledgehammer, walks over to the "rock", and hits it with such force that Ralph breaks apart into a number of pebbles, which all move into Ralph's cave.