Thomas Thaarup (21 August 1749 – 12 July 1821) was a Danish poet.
Thomas Thaarup was born in Copenhagen, where his father, Niels Thaarup, owned a hardware store. His mother's name was Anna Margaretha and her maiden name was Stupsack.
Though his family lived in Læsø, Thaarup was sent to a grammar school in Helsingør and went to Copenhagen University in 1768.
Thaarup wrote the libretto to C.E.F. Weyse's 1st Easter Cantata.