HITT can refer to:
- Heparin-induced thrombocytopenia, a type of disease
- HITT Production, a Turkish record label
- HITT (band), a South Korean boy band
- HITT Contracting Inc., a commercial construction company based in Falls Church, Virginia, USA.
People:
- Bryan Hitt, the drummer of American rock band REO Speedwagon
- Henry D. Hitt, an American buisnessman, farmer, legislator
- Jack Hitt, an American author
- John Hitt, the president of the University of Central Florida