| Acronym | Definition |
|---|
| ESK➣Energy Saving Kit (various companies) |
| ESK➣Enfants du Sourire Khmer (French children's aid association) |
| ESK➣Esperanto-Societo Kebekia (Esperanto: Quebec Esperanto Society) |
| ESK➣Étoile Sportive Kerfeunteun (French sports club) |
| ESK➣Episcopal School of Knoxville (Knoxville, TN; est. 1998) |
| ESK➣Ekonomik Sosyal Konsey |
| ESK➣Eisenschweinkader (German bicycle club) |
| ESK➣European School Karlsruhe (German school; Karlsruhe, Germany; est. 1962) |
| ESK➣Electronic SWO (Staff Weather Officer) Kit |