OSNI is the official Government organisation responsible for supplying mapping and geographic information services for Northern Ireland. It completed the world's first large-scale mapping of an entire country by 1846 at a scale of 6" to one mile. This was followed by an even more comprehensive survey, completed in 1867!

![]() | Armagh City Street Map - Ordnance Survey Northern Ireland Armagh City Street Map Standard: A folded paper map, printed on both sides, with an integral protective card cover. Primarily this product gives indexed street mapping at 1:10 000 scale of Armagh City, and also of Keady, Richhill, Tandragee and Market ... | From £5.90 | More Information » |
![]() | Armagh Discoverer Guide Map - Ordnance Survey Northern Ireland Armagh A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. Disc ... | From £6.00 | More Information » |
![]() | Ballycastle Discoverer Guide Map - Ordnance Survey Northern Ireland Ballycastle A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. ... | From £6.00 | More Information » |
![]() | Ballymena Street Map - Ordnance Survey Northern Ireland Ballymena Street Map Standard: A folded paper map, printed on both sides, with an integral protective card cover. Primarily this product gives indexed street mapping at 1:10 000 scale of Ballymena. The reverse of the map carrys a large, 1:50 000 scale ... | From £5.90 | More Information » |
![]() | Ballymoney Discoverer Guide Map - Ordnance Survey Northern Ireland Ballymoney A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. Di ... | From £6.00 | More Information » |
![]() | Belfast Discoverer Guide Map - Ordnance Survey Northern Ireland Belfast Standard: A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landma ... | From £6.00 | More Information » |
![]() | Belfast Pocket Guide Map - Ordnance Survey Northern Ireland Belfast Pocket Guide Standard: A handy and very compact guide to Belfast, ideal for short trips. The street mapping is at a very clear scale, and there is an index of streets at the rear, along with an "About Belfast" section which discusses main plac ... | From £3.00 | More Information » |
![]() | Belfast Street Map Ordnance Survey Northern Ireland - Belfast Street Map with Index Booklet Standard: The newest edition of this Belfast street map with index. Full street name coverage is provided, at an easy to read scale of 1:12 000. Information includes identification of main routes, one way streets, ... | From £5.90 | More Information » |
![]() | Coleraine Discoverer Guide Map Ordnance Survey Northern Ireland Coleraine Standard: A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish la ... | From £6.00 | More Information » |
![]() | Craigavon Discoverer Guide Map Ordnance Survey Northern Ireland Craigavon A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. Dis ... | From £6.00 | More Information » |
![]() | Craigavon Street Map - Ordnance Survey Northern Ireland Craigavon,Lurgan&Portadown Street Map A folded paper map, printed on both sides, with an integral protective card cover. This double sided product gives street mapping at 1:10 000 scale, of the whole area around Craigavon. This includes Lurgan, Portado ... | From £5.90 | More Information » |
![]() | Derry Street Map - Ordnance Survey Northern Ireland Derry Street Map A map from the OS Northern Ireland district series. This is a folded paper map with an integral card cover, to which an index booklet is attached. The index booklet is associated with the primary map; a 1:10 000 scale Londonderry stree ... | From £5.70 | More Information » |
![]() | Enniskillen Discoverer Guide Map - Ordnance Survey Northern Ireland Enniskillen A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. D ... | From £6.00 | More Information » |
![]() | Fermanagh Lakeland- Lwr Lough Erne Guide Map - Ordnance Survey Northern Ireland Fermanagh Lakeland- Lwr Lough Erne Standard: The Fermanagh Lakeland Lower Lough Erne Outdoor Pursuits and Navigation Guide. Mapping is single sided, showing the area at a scale of 1:25 000. Mappping features an extensive range of symbols associated wi ... | From £5.25 | More Information » |
![]() | Larne Discoverer Guide Map - Ordnance Survey Northern Ireland Larne A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. Disco ... | From £6.00 | More Information » |
![]() | Lisburn City Street Map - Ordnance Survey Northern Ireland Lisburn City Street Map A folded paper map, printed on both sides, with an integral protective card cover. Primarily this product gives indexed street mapping, at 1:10 000 scale, of Lisburn City and also of Hillsborough and Moira at the same scale. Th ... | From £5.90 | More Information » |
![]() | Londonderry Discoverer Guide Map - Ordnance Survey Northern Ireland Londonderry A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. D ... | From £6.00 | More Information » |
![]() | Lough Erne Activity Map - Ordnance Survey Northern ireland 1:25000 scale paper map, is designed specifically with the outdoor enthusiast in mind. They include all the features associated with land-based outdoor pursuits and the Lough Erne maps are also complete navigation guides with easy-to-follow hydrographi... | From £7.20 | More Information » |
![]() | Lough Neagh Discoverer Guide Map - Ordnance Survey Northern Ireland Lough Neagh A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. ... | From £6.00 | More Information » |
![]() | Lower Lough Erne Discoverer Guide Map - Ordnance Survey Northern Ireland Lower Lough Erne A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landm ... | From £6.00 | More Information » |
![]() | Monaghan-Keady Discoverer Guide Map - Ordnance Survey Northern Ireland Monaghan-Keady A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmas ... | From £6.00 | More Information » |
![]() | Newry & Mourne Street Map - Ordnance Survey Northern Ireland Newry & Mourne Street Map A map from the OS Northern Ireland district series. This is a folded paper map with an integral card cover, to which an index booklet is attached. Primarily this is a 1:50 000 scale Newry and Mourne road map, but with street n ... | From £5.90 | More Information » |
![]() | Omagh & Fintona Street Map - Ordnance Survey Northern Ireland Omagh & Fintona Street Map A folded paper map, printed on both sides, with an integral protective card cover. Primarily this product gives indexed street mapping at 1:10 000 scale of Omagh city, and also of Fitona at the same scale with separate index. ... | From £5.90 | More Information » |
![]() | Slieve Croob Leisure Map - Ordnance Survey Northern Ireland Slieve Croob Standard: This Slieve Croob Outdoor Pursuits Map gives coverage of the remainder of the Mourne Area of Outstanding Natural Beauty which is not covered by the Mourne Outdoor Pursuits map. Mapping provides information on walking, riding, ca ... | From £5.25 | More Information » |
![]() | Sperrins Activity Map - Ordnance Survey Northern Ireland Sperrins Activity Map Standard: A folded paper map of Sperrins. Printed on both sides, this map shows the wider Sperrins area at a scale of 1:100 000, with High Sperrins at 1:25 000 on the reverse. The National Cycle Network routes are shown, scenic r ... | From £7.20 | More Information » |
![]() | Strabane Discoverer Guide Map - Ordnance Survey Northern Ireland Strabane A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. Disc ... | From £6.00 | More Information » |
![]() | Strangford Lough Discoverer Guide - Ordnance Survey Northern Ireland Strangford Lough A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landma ... | From £6.00 | More Information » |
![]() | The Mournes Discoverer Guide Map - Ordnance Survey Northern Ireland The Mournes A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. D ... | From £6.00 | More Information » |
![]() | The Mournes Leisure Map - Ordnance Survey Northern Ireland The Mournes Standard: This very popular map covers the larger part of the Mournes, and is printed on paper which is chemically treated to be waterproof. The map is reversible; on the first side is the main Mournes map, which has contour lines and alti ... | From £7.20 | More Information » |
![]() | The Sperrins Discoverer Guide Map - Ordnance Survey Northern Ireland The Sperrins A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landmass. ... | From £6.00 | More Information » |
![]() | Upper Lough Erne Discoverer Guide Map - Ordnance Survey Northern Ireland Upper Lough Erne A folded paper topographic map from Ordnance Survey of Northern Ireland. These Discoverer maps are at the same scale, and in very similar format to the OSI Discovery maps and, together, the ranges cover the entirety of the Irish landma ... | From £6.00 | More Information » |