C.H.U.D. II: Bud the C.H.U.D. is a 1989 horror-comedy film. It is a loose sequel to C.H.U.D., mostly in name though the ties do carry on into dialogue and plot. As in the first film, C.H.U.D stands for "Cannibalistic Humanoid Underground Dweller", but the alternative acronym (Contamination Hazard Urban Disposal) is not carried over.

At the start of the film, the US Government has ordered a branch of the US Military to discontinue tests concerning "the C.H.U.D. project", which is built around the idea that enzymes taken from the sewer dwelling creatures from C.H.U.D. can make hyper-effective killing machines in the army. For reasons that are unclear even to those who watch the film, the last specimen of the experiment (BUD the C.H.U.D.) is hidden away in a Centre for Disease Control in a small American town, where a trio of bumbling teenagers accidentally steal and reawaken him. Bud escapes and begins to forge an army of C.H.U.Ds while harbouring a deep love for Katie.

The film only has the most tenuous of ties with its predecessor, despite both the title and poster, which depicts creatures from the first film climbing out of the sewers. The tone and intent of the film is completely different. Unlike the serious, 1950s tone of the original, C.H.U.D. II actually bears much more of a resemblance to the horror comedy mix of the Return of the Living Dead series, but instead of zombies shouting "brains", in C.H.U.D. II it is simply "Meat!".

The character of "BUD", a former soldier turned dead flesh-eater/killing machine being domesticated by the army, is an apparent parody of "Bub" from George A. Romero's Day of the Dead.