KLH
| Acronym | Definition |
|---|---|
| KLH | Keyhole Limpet Hemocyanin |
| KLH | Kementerian Lingkungan Hidup (Indonesian: Institutional Ministry of Environment; Indonesia) |
| KLH | Kantor Lingkungan Hidup (Indonesia Office of Environment) |
| KLH | Knight of the Legion of Honour |
| KLH | Korea Light Helicopter |
| KLH | Kloss, Lowe and Hoffman (audio equipment brand) |
| KLH | Ka Lahui Hawaii |