ESK
| 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 |