Narf or NARF may refer to:
- Native American Rights Fund, a non-profit law firm established in 1970
- A fictional creature, similar to a water nymph, in the film Lady in the Water
- A Sesame Street character from the Monster's Clubhouse segments
- Narf!, an interjection used by the cartoon character Pinky of Pinky and the Brain
- The tree Narf, a form of wildlife on the homeworld of the Zoq-Fot-Pik in Star Control II
- Nuclear prelamin A recognition factor, also known as NARF, is a protein which in humans is encoded by the NARF gene.
- A jargon adjective used to describe something that is simultaneously crazy and genius. Mostly used when talking to children.
- Narf, interjection used by Rin Katt