THY or Thy may refer to:
Thy, the genitive case of the English personal pronoun thou (archaic) Thy (district), Jutland, Denmark Thymine, one of the four nucleobases in the nucleic acid of DNA Turkish Airlines (ICAO: THY, from Turkish ) The first month in the Egyptian Middle Kingdom lunar calendar Lennart Thy (born 1992), German footballer
See also Thy1 (disambiguation)