Saint Johnstown
- Ballinalee
- Johnston (disambiguation)
- Johnstown (disambiguation)
- Perth, Scotland
- Saint John (disambiguation)
- Saint John's (disambiguation)
- Saint Johnstown, Delaware
- St Johnston, County Donegal
- St Johnstone F.C.
- St Johnstown (County Donegal) (Parliament of Ireland constituency)
- St Johnstown (County Longford) (Parliament of Ireland constituency)