This paper develops eight propositions regarding internationalization processes for small and medium-sized tourism firms (SMTFs). A SMTF is defined here as a company that produces a tourist attraction locally, its product based on local resources. This means that SMTFs rely on customers seeking them on the firms' home market. This has implications for the SMTF's expansion into new markets and, consequently, its internationalization process. In a study based on the propositions, the internationalization processes of ten Swedish SMTFs were investigated. It was found that some SMTFs internationalized slowly; initially displayed a reactive and emergent approach, and entered markets that were culturally and geographically close. Born global SMTFs, however, searched more actively for opportunities, also in more remote markets. Intermediaries were the dominant mode throughout the process for all firms. Over time, most of the SMTFs developed a more strategic and deliberate approach in their selection of counterparts and new markets. The support of a destination management organization was important initially for some of the firms.