Niewiadom (German: Birkenau) is a district of Rybnik, Silesian Voivodeship, southern Poland.

In 1792, on the border with Radlin, the Hoym (later Ignacy) coal mine was opened in Niewiadom.

In 1859, in the northern part, the Beatensglück (Polish: Szczęście Beaty, lit.

[2] After World War I in the Upper Silesia plebiscite 105 out of 169 voters in Niewiadom voted in favour of joining Poland, against 64 opting for staying in Germany.

They were then annexed by Nazi Germany at the beginning of World War II.