Enniskillen Collegiate Grammar School was a secondary school located in Enniskillen, County Fermanagh, Northern Ireland.
This name was changed when the school was taken over by the Fermanagh Regional Education Committee in 1925.
The school opened at its former east Enniskillen location in October 1931.
It was the first grammar school in the province to be erected by a public body.
At its closure approximately 500 pupils attended the school.