ICOMOS-UK is the UK Committee of ICOMOS, the International Council on Monuments and Sites. ICOMOS-UK is an independent charity with a UK-wide and international mission to promote and support best practice in the conservation, care and understanding of the historic environment.

ICOMOS (International) has a special responsibility to UNESCO as an official adviser on cultural World Heritage Sites and ICOMOS-UK plays an essential role in advising on aspects of World Heritage and sites for nomination across the UK. Much of its work is undertaken by its members who come from a wide range of backgrounds including architecture, planning, landscape design, and the heritage, archaeology, conservation, academic and tourism sectors.