The framework convention does not define what a national minority is. States are free to determine which minorities they wish to protect on their territory.
According to Switzerland's interpretative statement when it ratified the framework convention, Swiss national minorities are:
"groups of people who i) number less than the rest of the population of the country or canton, ii) are Swiss nationals, iii) have long-standing, solid and lasting links with Switzerland, and iv) are committed to preserving their common identity together, particularly their culture, traditions, religion or language".
The following are currently recognised as Swiss national minorities: national linguistic minorities, members of the Swiss Jewish community, and of the Yenish and Sinti/Manouche communities, whether nomadic or not.
Text of the framework convention
Chart of signatures, ratifications and dates of entry into force for the Framework Convention for the Protection of National Minorities, Council of Europe