HTA is an abbreviation for:
- Health Technology Assessment, concept of health sciences
- Hierarchical Task Analysis, systematic process analysis in the area of human-computer interaction
- Hessian Theatre Academy, union of all the universities involved in theater training in Hessen and the Hessian State and City Theatre and furthermore theater of Baden -Württemberg and Rhineland- Palatinate.
- Historical- Theological Interpretation of the New Testament series (R. Brockhaus Verlag, Brunnen Verlag )
- HTA Lucerne, ( College of Engineering and Architecture ), former name of HSLU T & A, see Lucerne # Lucerne University - Engineering and Architecture
- Explosives of RDX, TNT and aluminum powder
- Acronym: HTA, see HTML application, executable HTML file with the extension hta.