| A medieval foundation in the borough of Drogheda in Oirghialla | | Article in Journal | | 1957 |
| Cairteacha meán-aoiseacha do mhainistir Fhobhair, 12-13 céad | | Article in Journal | | 1961 |
| Concerning the origin of early medieval Irish monasticism | Sheehy, Maurice P. | Article in Journal | | 1962 |
| Diplomatica : unpublished medieval charters and letters relating to Ireland | | Article in Journal | | 1962 |
| Diplomatica : unpublished medieval charters and letters relating to Ireland | Sheehy, Maurice P. | Article in Journal | | 1962 |
| English law in medieval Ireland : two illustrative documents | | Article in Journal | | 1960 |
| Influences of ancient Irish law on the Collectio Canonum Hibernensis | Sheehy, Maurice P. | Article in Book | | 1971 |
| Ireland and the Holy See | Sheehy, Maurice P. | Article in Journal | | 1962 |
| Medieval sources : Registrum Clogherense | | Article in Journal | | 1961 |
| Pontifica Hibernica : medieval papal documents concerning Ireland 640-1261, vol. 2 | | Monograph or Collective Volume | Gill | 1965 |
| Pontificia hibernica : medieval papal chancery documents concerning Ireland, 640-1261. 2 vols. | | Monograph or Collective Volume | | 1965 |
| Studies on Frank O'Connor, with a bibliography of his writings | Sheehy, Maurice P. | Monograph or Collective Volume | Gill & Macmillan | 1969 |
| The Bible and the Collectio Canonum Hibernensis | Sheehy, Maurice P. | Article in Book | | 1987 |
| The bull Laudabiliter : a problem in medieval diplomatique and history | Sheehy, Maurice P. | Article in Journal | | 1961 |
| The bull Laudabiliter : a problem in medieval diplomatique and history | Sheehy, Maurice P. | Article in Journal | | 1960 |
| The Collectio Canonum Hibernensis - a Celtic phenomenon | Sheehy, Maurice P. | Article in Book | | 1982 |
| The parish of Athenry in 1434 | Sheehy, Maurice P. | Article in Journal | | 1964 |
| The popes and the ecclesiastical history of medieval Ireland : critical texts of the papal bulls, 1070-1254, with historical annotations | Sheehy, Maurice P., Rev. | Thesis | | 1960 |
| The registrum novum : a manuscript of Holy Trinity cathedral : the medieval charters | | Article in Journal | | 1964 |
| The relics of the apostles and early martyrs in the mission of St Patrick | Sheehy, Maurice P. | Article in Journal | | 1961 |
| Unpublished medieval notitiae and epistolae [1217-36] | | Article in Journal | | 1964 |
| When the Normans came to Ireland | Sheehy, Maurice P. | Monograph or Collective Volume | Mercier Press | 1975 |