| "Here will we sit" : the creation of the Ulster Hall | Johnston, Roy | Article in Book | Oxford University Press | 2000 |
| "That Domestic and Long-suffering Instrument" : The Piano Boom in Nineteenth-Century Belfast | Johnston, Roy | Article in Book | Ashgate | 2007 |
| Bunting's Messiah | Johnston, Roy | Monograph or Collective Volume | Ulster Historical Foundation | 2003 |
| Century of endeavour : a biographical and autobiographical view of the twentieth century in Ireland | Johnston, Roy | Monograph or Collective Volume | Tyndall Publications in association with Lilliput Press | 2003 |
| Century of endeavour : a biographical and autobiographical view of twentieth century Ireland | Johnston, Roy | Monograph or Collective Volume | Tyndall Publications in association with Lilliput Press | 2006 |
| Civil War in Ulster : its objects and probable results | Johnston, Joseph, 1890-[1972] | Monograph or Collective Volume | University College Dublin Press | 1999 |
| Concert auditoria in nineteenth-century Belfast | Johnston, Roy | Article in Book | | 2007 |
| Correspondence. The I.R.A. in the 1960s | Hanley, BrianJohnston, Roy | Article in Journal | | 2008 |
| John Desmond Bernal, 1901-1971 | Johnston, Roy | Article in Book | | 2003 |
| Music in Northern Ireland since 1921 | Johnston, Roy | Article in Book | | 2003 |
| Roderic O'Conor | Johnston, Roy | Monograph or Collective Volume | [s.n.] | 1985 |
| Science and technology in Irish national culture | Johnston, Roy | Article in Journal | | 1983 |
| Science, technology and nationality | Johnston, Roy | Article in Book | | 1998 |
| The musical life of nineteenth-century Belfast | Johnston, RoyPlummer, Declan | Monograph or Collective Volume | Ashgate | 2015 |
| The pleasures and penalties of networking : John Frederick Lampe in the summer of 1750 | Johnston, Roy | Article in Book | | 2004 |