| HN(S) | Host Nation(S) 
| Others |
| HNS | Haines, Alaska USA
| Others |
| HNS | Hair and Skin
| Others |
| HNS | Harbinger Net Services
| Others |
| HNS | Hartington Newcastle Schools
| Others |
| HNS | Hazardous And Noxious Substances
| Others |
| HNS | Head Neck Surgery
| Others |
| HNS | Health Needs Screening
| Others |
| HNS | Health Network Solutions
| Others |
| HNS | Help Net Security
| Others |
| HNS | Hide N Seek
| Others |
| HNS | High Nitrogen Steels
| Others |
| HNS | Hispanic Neuropsychological Society
| Others |
| HNS | Historical Novel Society
| Others |
| HNS | History News Service
| Others |
| HNS | Hmong National Society
| Others |
| HNS | Holy Name Society
| Others |
| HNS | Home Network Security
| Others |
| HNS | Home Network System
| Others |
| HNS | Hospice of the North Shore
| Others |
| HNS | Hospitality Network Service
| Others |
| HNS | Host Nation Support
| Others |
| HNS | Host New Support
| Others |
| HNS | Host-Nation Support
| Others |
| HNS | Hotel Network Scenario
| Others |
| HNS | House of Neighborly Service
| Others |
| HNS | Houston Neuropsychological Society
| Others |
| HNS | Hrvatska Narodna Stranka
| Others |
| HNS | Hrvatski nogometni savez
| Others |
| HNS | Hughes Network Systems
| Others |