| An Piarsach agus Conradh na Gaeilge | Ó Súilleabháin, Donnchadh | Monograph or Collective Volume | Clódhanna Teoranta | 1980 |
| An Piarsach óg agus Connradh na Gaeilge | O'Brien, Frank | Monograph or Collective Volume | Clódhanna Teoranta | 1974 |
| Conor Cruise O'Brien agus an liobrálachas | Ó Glaisne, Risteárd, 1927-2003 | Monograph or Collective Volume | Clódhanna Teoranta | 1974 |
| Gaeltacht Mhaigh Eo. | Ó Gadhra, Nollaig | Monograph or Collective Volume | Clódhanna Teoranta | 1983 |
| John Mitchel | Ó Cathaoir, Brendan | Monograph or Collective Volume | Clódhanna Teoranta | 1978 |
| Leathanaigh ó mo dhialann | MacLysaght, Edward | Monograph or Collective Volume | Clódhanna Teoranta | 1978 |
| Ó Cadhain i bhFeasta | Ó Cadháin, MáirtínÓ Laighin, Seán | Monograph or Collective Volume | Clódhanna Teoranta | 1991 |
| Ó Lyon go Dún Lúiche : logainmneacha san Oidhreacht Cheilteach | Ó Maolfabhail, Art | Monograph or Collective Volume | Clódhanna Teoranta | 2005 |
| Rós Fíain Lios an Daill | Uí Thallamhain, Caitlín | Monograph or Collective Volume | Clódhanna Teoranta | 1967 |
| The best of the English : a short account of the life and work of William Bedell, and the Irish version of the Bible for which he was responsible | Breatnach, Deasún | Monograph or Collective Volume | Clódhanna Teoranta | 1971 |
| Treithe Thomáis Ághas | Ó Muirthile, S. | Monograph or Collective Volume | Clódhanna Teoranta | 1967 |