ISS A/S is a Facility Services company founded in Copenhagen, Denmark in 1901. ISS services include: cleaning services, support services, property services, catering services, security services and facility management services.

ISS A/S engages in the provision of facility services. It offers its services to the information technology, manufacturing, public administration, healthcare, transportation and infrastructure, retail and wholesale, energy and resources, hotels, leisure and entertainment, food and beverage and pharmaceuticals sectors. Its services include facility management, cleaning, security, property, catering, and support services. The company was founded in 1901 and is headquartered in Copenhagen, Denmark.