Hiad or variation, may refer to:
- NASA Hypersonic Inflatable Aerodynamic Decelerator
- High Adhesion truck (HiAd); see List of GE locomotives
- HIAD 650 AM, Santo Domingo, Dominican Republic; a radio station
See also
- Hayling Island Amateur Dramatic Society (HIADS), Station Theatre (Hayling Island), Hayling Island, Hampshire, England, UK
- All pages with titles beginning with Hiad
- All pages with titles beginning with HIAD
- All pages with titles containing hiad