| Acronym | Definition |
|---|
| HNI➣Heinz Nixdorf Institut (Germany) |
| HNI➣Home Nonce Index |
| HNI➣Have No Idea |
| HNI➣High Networth Individual |
| HNI➣HarvestNET International (Ephrata, PA) |
| HNI➣Hajime No Ippo (anime) |
| HNI➣HealthNet International |
| HNI➣Haute-Normandie International (France) |
| HNI➣Home Network Identity |
| HNI➣Havelock North Intermediate School (Havelock North, Hawkes Bay, New Zealand) |
| HNI➣Has No Income |