| "Tuaith siosta na bhfionna-bhrú naolta" | Ó Suilleabháin, Seán, 1903-1996 | Article in Book | | 1999 |
| A biographical and bibliographical dictionary of Longford authors | Ó Suilleabháin, Seán | Monograph or Collective Volume | Westmeath Joint Library Committee | 1978 |
| A handbook of Irish folklore | Ó Suilleabháin, Seán, 1903-1996 | Monograph or Collective Volume | Folklore Soc. | 1942 |
| Adhlacadh Leanbhaí | Ó Suilleabháin, Seán, 1903-1996 | Article in Journal | | 1939 |
| An crois Bríde | Ó Suilleabháin, Seán, 1903-1996 | Article in Book | | 1982 |
| An Ghaeilge i gContae Longfort | Ó Suilleabháin, Seán | Article in Journal | | 2007 |
| Aughakine - the decimation of a townland over the past fifty years | Ó Suilleabháin, Seán | Article in Journal | | 2007 |
| Bataí Scóir | Ó Suilleabháin, Seán, 1903-1996 | Article in Book | | 1995 |
| Caitheamh aimsire ar thórraimh | Ó Suilleabháin, Seán, 1903-1996 | Monograph or Collective Volume | An Clóchomhar | 1961 |
| Come on Cannaboe : 100 years of Ballinamore, Seán O'Heslin's G.A.A. club | Ó Suilleabhain, Seán | Monograph or Collective Volume | Seán O'Helin's G.A.A. Club | 1989 |
| Faicseanacht sa pholaitiócht (1903 go 1910) | Ó Suilleabháin, Seán S. | Article in Journal | | 1987 |
| Fishing for the sun-fish or basking shark in Irish waters | Went, A. E. J.Ó Suilleabháin, Seán, 1903-1996 | Article in Journal | | 1967 |
| Irish folk custom and belief | Ó Suilleabháin, Seán, 1903-1996 | Monograph or Collective Volume | [s.n.] | 1967 |
| Irish oral tradition | Ó Súilleabháin, Seán | Article in Book | | 1969 |
| Láimh-leabhar béaloideasa | Ó Suilleabháin, Seán, 1903-1996 | Monograph or Collective Volume | Comhlucht Oideachais na hÉireann | 1937 |
| Leabharlann Chontae Liatroma : 75 bliain ar an saol | Ó Suilleabháin, Seán | Monograph or Collective Volume | Leitrim County Library | 2005 |
| Leitrim GAA millennium book | Ó Suilleabháin, Seán | Monograph or Collective Volume | Foilsibhe ag Coiste Chontae Liatroma Cuman Luth | 2000 |
| Longford authors | Ó Suilleabháin, Seán | Monograph or Collective Volume | [s.n.] | 1978 |
| Longford's Republican Story: 1900-2000: Ar Son Saoirse na hÉireann | Ó Súilleabháin, Seán | Monograph or Collective Volume | Seán Ó Súilleabháin | 21 |
| Miraculous plenty : Irish religious folktales and legends | NA | Monograph or Collective Volume | Comhairle Bhéaloideas Éireann / An Cumann le Béaloideas Éireann [Folklore of Ireland Council / The Folklore of Ireland Society] [Distributed by Four Courts Press] | 2011 |
| North Longford words and phrases | Ó Súilleabháin, Seán | Article in Journal | | 2008 |
| Sealanna Siamsa | Ó Suilleabháin, Seán | Article in Journal | | 1989 |
| Some folklore traditions of Imokilly | Ó Suilleabháin, Seán, 1903-1996 | Article in Journal | | 1945 |
| Stair na Gaeilge i gContae Liatroma : faoi bhláth, faoi mheath agus ag treisiú arís | Ó Súilleabháin, Seán | Article in Book | | 2019 |
| Surnames of County Leitrim | Ó Suilleabhain, Seán | Article in Journal | | 1994 |
| The Iveragh Fenians in oral tradition | Ó Suilleabháin, Seán, 1903-1996 | Article in Journal | | 1967 |
| The music collection of the Irish Folklore Commission | Ó Suilleabháin, Seán, 1903-1996 | Article in Book | | 1952 |
| Tracing your Leitrim ancestors | Ó Suilleabhain, Seán | Article in Journal | | 1992 |
| Tuaith siosta na bhfionna-bhrú naolta | Ó Suilleabháin, Seán, 1903-1996 | Article in Journal | | 1969 |
| Under the thatch : memories of a Longford childhood | Ó Súilleabháin, Seán | Monograph or Collective Volume | Seán Ó Súilleabháin | 2018 |