Wojciech Stefan Trąmpczyński was a Polish lawyer and National Democratic politician. Voivode of the Poznań Voivodeship in 1919. He served as marshal of the Sejm of Poland from 1919–1922 and Senate of Poland from 1922 to 1928.
Trąmpczyński was born in Dębłowo in the Prussian Province of Posen. He graduated from the law faculty of the University of Wrocław. He died in 1953 in Poznań.