The requirement specifies that any individual seeking Polish citizenship must hold a confirmed qualification in the Polish language at B1 level. Poland requires foreigners to hold an official B1-level Polish language certificate for citizenship. Polish language qualification explainedThe government's website states the rule plainly: "Remember! In order to be legally recognised as a Polish citizen, you need to have a Polish language qualification at B1 level, you need an official confirmation." The language condition makes clear that integration into Polish society requires more than simply residing in the country.