HATT


AcronymDefinition
HATTHelp Authoring Tools and Techniques (web forum)
HATTHigh All the Time
HATTHanung Toys and Textiles Limited (India; toy manufacturing)
HATTHands across the Trail (Appalachian Trail event)
HATTHeparin-Associated Thrombocytopenia with Thrombosis (biomedicine)
HATTHimpunan Alumni Timur Tengah (Indonesian: Alumni Association of the Middle East)