Nerf is a brand of toy and can also refer to the foam that these toys use.

Nerf may also refer to: Nerf (video gaming), a manufacturer's change reducing the utility of a game element Nerf bar, a step on the side of a vehicle New Ets-related factor (NERF), or ELF2, a transcription factor Neural radiance field (NeRF), making 3D model from 2D images in machine learning Nerf, a fictional animal in the Star Wars universe Nirma Education and Research Foundation, patron of Nirma University