A charity shop, thrift shop, thrift store, hospice shop (U.S., Canada), resale shop (when not meaning consignment shop (U.S.)), op shop (Australia/N.Z.) (from "opportunity shop"), or second-hand shop (Malaysia) is a retail establishment operated by a charitable organization for the purpose of fundraising.

Charity shops are a type of social enterprise. They usually sell mainly second-hand goods donated by members of the public, and are often staffed by volunteers. Because the items for sale were obtained for free, and business costs are low, the items can be sold at very low prices. After costs are paid, all remaining income from the sales is used in accord with the organization's stated charitable purpose. Costs include purchase and/or depreciation of fixtures (clothing racks, bookshelves, counters, etc.), operating costs (maintenance, municipal service fees, electricity, telephone, limited advertising) and the building lease or mortgage.