| St Mary's College, Aberystwyth | |
|---|---|
Coleg Mair | |
 Welsh Books Council building, formerly St Mary's College | |
 | |
| 52°25′12″N 4°04′51″W / 52.419940°N 4.080947°W | |
| Location | Aberystwyth, Wales |
| Country | United Kingdom |
| Denomination | Catholic |
| History | |
| Founded | 1904 |
| Founder(s) | Francis Mostyn |
| Dedication | Blessed Virgin Mary |
| Events | Reopened in Aberystwyth 1936 |
| Architecture | |
| Functional status | Closed |
| Closed | 1970 |
St Mary's College (Welsh: Coleg Mair) was a Roman Catholic seminary in Aberystwyth, Wales, in the United Kingdom. It was the only Roman Catholic diocesan seminary founded in Wales. Also, as it trained priests in the Welsh language, it was the only post-reformation Roman Catholic college of its kind. It was founded in 1904 in Holywell and moved to Aberystwyth in 1936. It was closed in 1970 and now houses the Welsh Books Council.