ARCHESAppui aux Recherches sur la Contextualisation et l'Harmonisation des Enseignements Secondaires (French: Support for Research on Contextualization and Harmonization of Secondary Education) Miscellaneous
ARCHESAquinas Roman Catholic Home Education Services (est. 1995; Wyoming, MN) Miscellaneous
ARCHESAssessment and Rehabilitation of Central European Highway Structures (EU Specific Targeted Research Project) Miscellaneous
ARCHESAssociation de Réflexion, de Communication Hospitalières et Éducatives pour la Santé Miscellaneous