Hoffmann's rat (Rattus hoffmanni) is a species of rodent in the family Muridae. It is found only in Indonesia, and is located throughout Sulawesi, as well as Malenge island in the Togian Islands.

R. hoffmanni is nocturnal, often sheltering in dense foliage. Each eye has a black ring. The feet are brown dorsally. The ears are large, rubbery, and grey-brown. The vibrissae are long and black. Juveniles are both darker and softer than adults.

Measurements of the species:

R. hoffmanni primarily eat a variety of plants, though also have been found to have eaten various insects, possibly from eating figs.

Here are the stomach contents of a R. hoffmanni:

R. hoffmanni will live in lowlands, montane tropical cool and moist forests, and around streams.