The RIVA TNT2 is a graphics processing unit manufactured by Nvidia starting in early 1999. The chip is codenamed "NV5" because it is the 5th graphics chip design by Nvidia, succeeding the RIVA TNT (NV4). RIVA is an acronym for Real-time Interactive Video and Animation accelerator. The "TNT" suffix refers to the chip's ability to work on two texels at once. Nvidia removed RIVA from the name later in the chip's lifetime.

The RIVA TNT, codenamed NV4, is a 2D, video, and 3D graphics accelerator chip for PCs that was developed by Nvidia and released in March 1998. It cemented Nvidia's reputation as a worthy rival within the developing consumer 3D graphics adapter industry. It succeeded the RIVA 128.