Stefan Bryła (b. August 17, 1886 in Kraków - December 3, 1943 in Warsaw, Poland) was a Polish construction engineer and welding pioneer.

Professor at the Lwów University of Technology since 1927, and Warsaw University of Technology since 1934.

Bryła was the author of basic methods of welding steel structures. In 1927 he built the first welded road bridge in the world. He also designed a high rise building called Prudential in Warsaw in 1932.

During the World War II he teached at the so-called "Secret Universities"

He was murdered by the Germans in Warsaw in 1943.