Túath (plural túatha) was a medieval Irish polity smaller than a kingdom. The word is from Old Irish and is often translated as "people" or "nation". It is cognate with the Welsh and Breton tud (people), Galician toudo, and with Germanic (for which see theodiscus).

Túath (plural túatha) was a medieval Irish polity smaller than a kingdom. The word is from Old Irish and is often translated as "people" or "nation". It is cognate with the Welsh and Breton tud (people), Galician toudo, and with Germanic (for which see theodiscus).