| Acronym | Definition |
|---|
| HDTC➣Humanitarian Demining Training Center |
| HDTC➣High Definition Telecine (film process) |
| HDTC➣Homeland Defense Technology Center (US Army) |
| HDTC➣Holding Down the Couch (webcomic) |
| HDTC➣Hornchurch Drum & Trumpet Corps (UK) |
| HDTC➣High-Density Turbidity Current (sedimentary geology) |