Isham is a village and civil parish in Northamptonshire, England.
Isham or ISHAM may also refer to:
Isham (surname) Isham (given name) Isham baronets, a title in the Baronetage of England Isham, Saskatchewan, Canada, a community Isham, Tennessee, United States, an unincorporated community
ISHAM, the International Society for Human and Animal Mycology