Matthew Stanley "Matt" Quay (September 30, 1833May 28, 1904) was a Pennsylvania political boss once dubbed a "kingmaker" by President Benjamin Harrison. He graduated college, studied law and opened a legal practice in 1854. During the Civil War, he served in the Union Army as a member of the 134th Pennsylvania Infantry Regiment, which he commanded as a colonel. Quay received the Medal of Honor for heroism at the battle of Fredericksburg. He later served as the Pennsylvania Militia's assistant commissary general, and as a personal assistant to Governor Andrew Curtin.