Look up pack rat in Wiktionary, the free dictionary.
A pack rat is a small rodent in the genus Neotoma.
Pack rat can also refer to:
- A person who engages in compulsive hoarding
- Peter Pack Rat, a 1985 arcade game
- A packrat parser for parsing expression grammar
- Packrat (Transformers), a fictional character in the Transformers universe
- Pack Rat, a minor villain from Batman: The Animated Series.
- Packrat, a villain from Ryan's World