TXA or txa may refer to:

Tranexamic acid, a medication used to treat or prevent excessive blood loss from major trauma and postpartum bleeding TXA, the Amtrak station code for Texarkana Union Station, Arkansas, United States txa, the ISO 639-3 code for Tombonuwo language, Sabah, Malaysia TXA2, short for Thromboxane A2 TX-A, code on number plates for taxis in Belgium