HTX may refer to:
Hashitoxicosis Heart transplantation Heat exchanger Hemitoxin Higher Technical Examination Programme of the Danish educational system Home Team Science and Technology Agency, a statutory board in the Singapore government focusing on science and technology in public security Homothorax Houston, Texas, United States HTX (cryptocurrency exchange) Middle Hittite language, an extinct language of Anatolia ZIC3, a protein HyperTransport Expansion connector, part of the HyperTransport specification