Tafkin Xau wani tafki ne wanda wani lokacin busasshen tabki ne a cikin Botswana. Ana ciyar da ita ta Kogin Boteti da Delta Okavango. An bayyana tabkin a matsayin "lokacin da yake rike ruwa, daya daga cikin muhimman wurare masu dausayi ga tsuntsayen ruwa a Kudancin Afirka". Parry, David (1987). "Wildebeest (Connchaetes taurinus) Mortalities at Lake Xau, Botswana". Botswana Notes and Records. 19: 95–101. JSTOR 40979793. Okavango Research Institute (ORI) Library (2012-03-19). "Flow : Information for Okavango Delta Planning: Lake Xau reviewed by Professor Cornelis Vanderpost". Flow. Retrieved 2019-10-30. "Will Lake Xau fill?". BirdLife Botswana. 22 October 2009. "Lake Xau: conservation to enhance livelihoods". The GEF Small Grants Programme.