Thu

Thu and variations may refer to:


 * Thursday
 * Thu (surname), the Gan romanization of the Chinese surname Su
 * Thu (pronoun) or Þu, an Old English pronoun
 * Thû, an early name for Sauron in J.R.R. Tolkien's works
 * Thu, Palpa, a village development committee in Nepal
 * Thu., abbreviation for the orchid genus Thunia
 * Thu, a dog belonging to the Claidi and Argul in The Claidi Journals by Tanith Lee
 * Tsinghua University in China
 * Tunghai University, a university in Taichung, Taiwan
 * Pituffik Space Base (IATA airport code)
 * Thư, the Vietnamese romanization of the Chinese surname Shu (surname), 舒