The Groupement de Recherche et d'Études pour la Civilisation Européenne ("Research and Study Group for European Civilization"), better known as GRECE, is a French ethnonationalist think tank founded in 1968 to promote the ideas of the Nouvelle Droite ("New Right"). GRECE founding member Alain de Benoist has been described as its leader and "most authoritative spokesman". Prominent former members include Guillaume Faye and Jean-Yves Le Gallou.

GRECE is deeply opposed to multiculturalism, liberal democracy, capitalism, and distinguishes itself from other national-conservative organizations in its specific rejection of Christianity and endorsement of neopaganism. The group defends a nonreactionary "conservative revolution" aiming at the rejuvenation of a pan-European identity and nationalism, while supporting the preservation and separation of ethnic groups and cultures at the worldwide level. GRECE members have coined and promoted influential concepts in the Western far right, such as "ethnopluralism" and "archeofuturism".