HTR

HTR may refer to:


 * Handwritten text recognition
 * Happy Tiger Records catalog number, e.g. HTR-1006
 * Harvard Theological Review
 * Hateruma Airport, in Okinawa Prefecture, Japan
 * Healing Through Remembering
 * Head-twitch response
 * The Herald Times Reporter, a newspaper in Manitowoc, Wisconsin, US
 * High-temperature reactor, see High-temperature gas reactor
 * Historical trauma response
 * Horticultural therapist, see Horticultural therapy
 * HTR High Tech Racing, a video game
 * Human telomerase (hTR)
 * Hypotensive transfusion reaction