Esker (disambiguation)
An esker is a ridge of sand and gravel.
Esker may also refer to:
- An eschar, slough or dead tissue
 - Esker, Iran, a village in Kerman Province, Iran
 - Esker, County Tyrone, a townland in County Tyrone, Northern Ireland
 - Esker, County Galway, a townland in East Galway
 - Esker, Wisconsin, an unincorporated community
 - Esker SA, a French software company