The Standard Steel Car Company (SSC) was a manufacturer of railroad rolling stock in the United States that existed between 1902 and 1934.

Established in 1902 in Butler, Pennsylvania by John M. Hansen and "Diamond Jim" Brady, the company quickly became one of the largest builders of steel cars in the United States.

Pressed Steel Car's Chief Designer John M. Hansen and famed salesman "Diamond Jim" Brady left the company in 1901 to found SSC.

With financial backing from Andrew Mellon, SSC was incorporated on January 2, 1902, broke ground for its new half-mile long plant in Butler in April, and produced its first car (Chesapeake & Ohio 23001) in August.

"Diamond Jim" Brady died in 1917, and Hansen retired from the presidency in 1923, succeeded by Colonel James Frank Drake.

Pullman continued to operate at Butler until it exited the railroad car business in 1982, and sold the plant to Trinity Industries in 1984.