Teethgrinder was a single released by the band Therapy?, taken from their Nurse album. It was released on 19 October 1992 through A&M Records. The single reached number 30 in the UK Singles Chart, and number 19 in the Irish Singles Chart.
It was available on 7", limited edition purple vinyl 7", CD, CD Digipak, 12", and 12" remix. Both 12"s were also repackaged together as a limited edition presentation pack.