| St. Declan's College | |
| Address: | Nephin Road |
| County: | Dublin 7 |
| Principal: | Brian Avery |
| Staff: | ~100 |
| Schooltype: | Secondary |
| Motto: | Cursum Tenere |
| Motto Translation: | Stay thy course |
| Colours: | Yellow |
| Established: | 1960 |
| Students: | ~700 |
St. Declan's College is an all-boys, Catholic secondary school located in Cabra West, Dublin, Ireland. It was originally established by The Christian Brothers in 1960 with an initial enrollment of 75. It is now a public (state-funded) school under the management of the Edmund Rice Schools Trust.