Mountjoy
- Baron Mountjoy
- Brockagh
- Celeste Mountjoy
- Charles Blount, 1st Earl of Devonshire
- Charles Blount, 5th Baron Mountjoy
- Dick Mountjoy
- Don Mountjoy
- Doug Mountjoy
- Dungannon Upper
- Eric W. Mountjoy
- Henry V (play)
- Larne Gun Running
- Lord Deputy of Ireland
- Marvel Comics
- Monte do Gozo
- Montjoi (disambiguation)
- Montjoie (disambiguation)
- Mount Joy (disambiguation)
- Mountjoy (comics)
- Mountjoy Blount, 1st Earl of Newport
- Mountjoy Castle
- Mountjoy Prison
- Mountjoy Square
- Mountjoy, Durham
- Mountjoy, Ontario
- Nabi Samwil
- Penelope Mountjoy
- Shakespeare
- Siege of Derry
- Timmins
- Ulster
- William Blount, 4th Baron Mountjoy