William Mason (locomotive builder)

William Mason
William Mason
Born(1808-09-02)September 2, 1808
DiedMay 21, 1883(1883-05-21) (aged 74)
Resting placeTaunton, Massachusetts
Educationself-taught
OccupationMechanical Engineer
EmployerMason Machine Works
Known forMason's Spinning Mule / locomotive builder

William Mason (September 2, 1808 – May 21, 1883) was a master mechanical engineer and builder of textile machinery and railroad steam locomotives. He founded Mason Machine Works of Taunton, Massachusetts. His company was a significant supplier of locomotives and rifles for the Union Army during the American Civil War. The company also later produced printing presses.