Found 4 full forms for HHWT
| Term | Full Form | Category |
|---|---|---|
| HHWT | Haliburton Highland Water Trails 
| Others |
| HHWT | Haliburton Highlands Water Trails
| Others |
| HHWT | Have Halal Will Travel
| Others |
| HHWT | Household Water Treatment
| Others |