Paitchau (also Gunung Paitchau, or Paitchao, or Paitxau; locally, Pai Tekau Ile) is a mountain in the Tutuala subdistrict, Lautém District of East Timor. Situated within Nino Konis Santana National Park, it is south of Lake Ira Lalaro. Though part of a mountain chain, Paitchau is an isolated mountain in the southern Sucos Mehara. It ranges in altitude from . BirdLife International has classified the mountain and its surrounding region of as an Important Bird Area of East Timor. The area contained within the Paitchau Range and Ira Lalaro is sparsely populated and contains several unique faunal and floral species.