Uhaitz or Ugaitz is a Basque word meaning 'torrential river'. It may refer to:
Rivers Uhaitza or Uhaitz Handia 'big torrent', vernacular name of the Saison Uhaitxa (pronounced ), river of Sainte-Engrâce, Pyrénées-Atlantiques, France Uhaitza (Uraitza, Uhaitxe), river in Pagolle Uhaitz or Uhatz, brook in Ascain, Pyrénées-Atlantiques, France Uhaitz-zubi, a tributary of the Estang that rises in Jatxou
See also Ugarre, brooks in Larrau and Esterençuby Uharka, brook in Sare Uharratea (Uharatia), tributary of the Otsarteko erreka in Iholdy Ugartzan, Uhartzane, a hamlet of the commune of Ossès, Lower Navarre, Pyrénées-Atlantiques, France