Coláiste Eoin is a Catholic voluntary secondary Gaelcholáiste (Irish language school) for boys, under the trusteeship of the Edmund Rice Schools Trust, in Booterstown, County Dublin, Ireland.

The school is financed by resources from the Department of Education and voluntary donations.

The campus incorporates Coláiste Eoin and Coláiste Íosagáin's original 1970s-built buildings, a science block, an arts block, the newly built 3-storey classroom block and sports hall, and a large sports field with a football and hurling pitch.

Coláiste Íosagáin is an Irish language Catholic voluntary secondary Gaelscoil for girls under the trusteeship of the Sisters of Mercy, which shares a campus with Coláiste Eoin.

It was established in 1971, two years after Coláiste Eoin's establishment, to provide an Irish language education for girls in the South County Dublin Dublin area.