| A Co. Cavan itinerary circa 1744 | O'Connell, Philip | Article in Journal | | 1963 |
| A Dublin convert roll : the diary of the Rev. P. E. O'Farrelly | O'Connell, Philip | Article in Journal | | 1949 |
| An O'Reilly genealogy | O'Connell, Philip | Article in Journal | | 1963 |
| Andrew Carney (1794-1864) | O'Connell, Philip | Article in Journal | | 1959 |
| Austerity and Recovery in Ireland: Europe's Poster Child and the Great Recession | | Monograph or Collective Volume | Oxford University Press (OUP) | 2017 |
| Breifne and its chieftains | O'Connell, Philip | Article in Book | | 1950 |
| Bust to boom? : the Irish experience of growth and inequality | | Monograph or Collective Volume | IPA | 2000 |
| Castle Kieran | O'Connell, Philip | Article in Journal | | 1957 |
| Dr James Louis O'Donnell (1737-1811), first bishop of Newfoundland | O'Connell, Philip | Article in Journal | | 1965 |
| Early colonisation of Breifne | O'Connell, Philip | Article in Journal | | 1958 |
| Edmund Burke and the first Stuart revolution | Connell, Philip | Article in Journal | | 2020 |
| Introduction 'Poster Child' or 'Beautiful Freak'?: Austerity and Recovery in Ireland | O'Connell, Philip J.5Prothero, AndreaRoche, William K | Article in Book | | 2017 |
| Kells : early and medieval | O'Connell, Philip | Article in Journal | | 1960 |
| Loughan and Dulane | O'Connell, Philip | Article in Journal | | 1958 |
| Migration | Glynn, IrialO'Connell, Philip J. | Article in Book | | 2017 |
| Priests of the diocese of Kilmore : Father Felix McCabe (c.1750-1816) | O'Connell, Philip | Article in Journal | | 1961 |
| Romanticism and popular culture in Britain and Ireland | | Monograph or Collective Volume | Cambridge University Press | 2009 |
| Siege of Clonmel commemoration : tercentenary souvenir record | Darmody, W. C.O'Connell, Philip | Monograph or Collective Volume | Nationalist Newspaper Co. | 1950 |
| Some Co. Cavan links with Montreal | O'Connell, Philip | Article in Journal | | 1964 |
| Some county Cavan priests in Connecticut | O'Connell, Philip | Article in Journal | | 1965 |
| Some county Leitrim wills | | Article in Journal | | 1960 |
| Some county Leitrim wills and leases, part 2 | O'Connell, Philip | Article in Journal | | 1965 |
| Some county Leitrim wills and leases. Part 3 | O'Connell, Philip | Article in Journal | | 1966 |
| Sources for the life of St Mogue | O'Connell, Philip | Article in Journal | | 1959 |
| The Crossdrum chalice - 1635 | O'Connell, Philip | Article in Journal | | 1947 |
| The defenders of Clonmel | O'Connell, Philip | Article in Book | | 1950 |
| The diocese of Kilmore : its history and antiquities | O'Connell, Philip | Monograph or Collective Volume | Browne and Nolan | 1937 |
| The dynamics of the Irish labour market in comparative perspective | O'Connell, Philip | Article in Book | | 2000 |
| The family of General P. H. Sheridan | O'Connell, Philip | Article in Journal | | 1938 |
| The Irish welfare state in comparative perspective | O'Connell, PhilipRottman, David B. | Article in Journal | | 1992 |
| The Irish welfare state in comparative perspective | O'Connell, PhilipRottman, David B. | Article in Book | | 1992 |
| The Kildrumfertan epitaphs | O'Connell, Philip | Article in Journal | | 1965 |
| The line of Colonel John O'Reilly | O'Connell, Philip | Article in Journal | | 1962 |
| The Lurgan epitaphs | O'Connell, Philip | Article in Journal | | 1961 |
| The parish and district of Kilbride, part 1 | O'Connell, Philip | Article in Journal | | 1962 |
| The parish and district of Kilbride, part 2 : sixteenth century landowners | O'Connell, Philip | Article in Journal | | 1963 |
| The parish and district of Kilbride. Part 3 : the church of Kilbride | O'Connell, Philip | Article in Journal | | 1964 |
| The parish of Innisheen | O'Connell, Philip | Article in Journal | | 1961 |
| The plot against Fr. Nicholas Sheehy : the historical background | O'Connell, Philip | Article in Journal | | 1967 |
| The role of the state in growth and welfare | O'Connell, PhilipÓ Riain, Seán | Article in Book | | 2000 |
| The schools and scholars of Breiffne | Corcoran, Timothy Joseph, 1872-1943Lyons, P.O'Connell, Philip | Monograph or Collective Volume | Browne and Nolan | 1942 |
| The topography of the Loch Ramor region | O'Connell, Philip | Article in Journal | | 1967 |
| The topography of the Lough Ramor region : Átha na Dairbhrighe | O'Connell, Philip | Article in Journal | | 1969 |
| Unemployment and Labour Market Policy | O'Connell, Philip J. | Article in Book | | 2017 |