Thomas Szczeponik (born 4 December 1860 in Peiskretscham, Province of Silesia (now Poland), died 30 January 1927 in Katowice (Kattowitz)) was a German-Polish Catholic politician.
He was elected to the Weimar National Assembly in 1919 as a representative of the Catholic Centre Party, and was a member of the German Reichstag until 31 August 1922.
After becoming a Polish citizen, he founded the Katholische Volkspartei, a Catholic party that promoted the interests of the German minority in Upper Silesia.
After his death, Arthur Gabrisch succeeded him as Senator and Conrad Kunsdorf as Member of the Silesian Parliament.
A school in Hindenburg in the German part of Silesia was named in his honour from 1929 to 1935.