The largest Protestant church in Poland, the Evangelical Church of the Augsburg Confession, or Old Lutheran Church, had about 90,000 members in six dioceses in 1989, figures substantially reduced by postwar resettlement of the German minority that made up a large part of the church's membership (see Ethnic Groups , this ch.). Services were conducted in Polish. The membership was concentrated in the Cieszyn Diocese, on the Czechoslovak border southwest of Kraków. Of the original twentysix parishes founded in German communities of Silesia and Pomerania, nineteen remained in 1985. Despite its name, the church was not a formal member of the Germany-based Evangelical Church of the Augsburg Confession.

Data as of October 1992