| Acronym | Definition |
|---|
| IoH | Internet of Health (annual conference) |
| IoH | Institute of Hospitality (various locations) |
| IoH | Island of Happiness (Harvest Moon game) |
| IoH | I'm Outta Here |
| IoH | Institute of Health (University of Warwick; UK) |
| IoH | Input/Output Hub |
| IoH | Institute of Horticulture |
| IoH | Infinity on High (Fall Out Boy's music album) |
| IoH | Institute of Hydrology (Wallingford, UK) |
| IoH | Institute of Occupational Health (University of Birmingham) |
| IoH | Institute of Heraldry |
| IoH | Interactive Out of Home (marketing) |
| IoH | Industrial and Organisational Health (UK) |
| IoH | I'm Only Human (Internet slang) |
| IoH | Instructors Of the Handicapped (Manchester, CT) |
| IoH | Institute of Heartmath (USA) |
| IoH | Item on Hand |
| IoH | Imminence of Hostilities |