This is a list of German language place names (toponyms) for the region of Upper Silesia. Upper Silesia today is in the Opole Voivodeship and the Silesian Voivodeship in Poland.
Biała - Zülz
Bielsko (nowadays part of Bielsko-Biała) - Bielitz
Bytom - Beuthen
Chorzów - Königshütte
Cieszyn - Teschen
Gliwice - Gleiwitz
Głogówek - Oberglogau
Głubczyce - Leobschütz
Głuchołazy - Bad Ziegenhals
Katowice - Kattowitz
Kędzierzyn-Koźle - Kandrzin-Cosel
Kluczbork - Kreuzburg
Krapkowice - Krappitz
Łaziska Górne - Ober Lazisk
Mikołów - Nicolai
Mysłowice - Myslowitz
Nysa - Neisse
Olesno - Rosenberg
Opole - Oppeln
Orzesze - Orzesche
Piekary Śląskie - Deutsch Piekar
Prudnik - Neustadt
Pszczyna - Pless
Racibórz Ratibor
Ruda Śląska - Ruda
Siemianowice Śląskie - Laurahütte
Strzelce Opolskie - Groß Strehlitz
Świętochłowice - Schwientochlowitz
Tarnowskie Góry - Tarnowitz
Tychy - Tichau
Zabrze - Hindenburg
Zdzieszowice - Deschowitz
Żory - Sohrau
Most of those are not originally german but just germanised polish names (consist of words with meaning in one language but not the other) which were being forced in during numrous years German occupations.