THU

Thu is most often an abbreviation for Thursday.

It can also mean"

 THU, Three-letter abbreviation for Tsinghua University, Beijing, China.
 THU, Three-letter abbreviation for Tunghai University, Taichung, Taiwan.
 THU, IATA airport code for Thule Air Base
 early name for Sauron in J. R. R. Tolkien's Middle-earth legendarium
 Þu, an Old English Pronoun
 suggested gender neutral pronoun
A dog belonging to Claidi and Argul in The Claidi Journals
Thu (movie) - a 1961 Burmese movie
Thu, the abbreviation for the orchid genus Thunia