Land & Property Services – Ordnance Survey of Northern Ireland

Ordnance Survey of Northern Ireland® (OSNI®) is a National Mapping Authority and the official producer of high quality, accurate and current geographic mapping data for Northern Ireland. Public and private sector customers rely on our products and services to support their business needs and those of their end-users. Ordnance Survey of Northern Ireland (OSNI) is part of Land & Property Services (LPS) within the Department of Finance.