Santa Casa da Misericórdia de S. Bento de Arnoia is a community-focused social care organisation serving Celorico de Basto, Portugal. Based in Arnoia, it provides support for people at different stages of life through residential care, home assistance, childcare and health services. Its older-adult services include the D. Maria Olímpia Teixeira Mota Guedes residential home and a home-support service. For children, the organisation operates a nursery, daycare centre and preschool. Its health provision includes a long-term care and maintenance unit, as well as physical medicine and rehabilitation.

The institution also offers Casa das Abegoarias, listed as local accommodation, and welcomes benefactions and legacies in support of its work. Through its social services, Santa Casa aims to address a range of community needs, from early childhood care to ongoing support for older people and those requiring rehabilitation or continued care. The organisation shares institutional information, reports, news and activity updates, and invites community members to contribute to its mission. Its facilities and administrative services are based in Arnoia.