John Sanderson Cock (March 25, 1801 – June 20, 1869) was an American politician and judge from Ohio.

[1] As a young man, Cock learned the tanning business from John McCadden.

[1][2] While in Jefferson County, Cock was associate judge of the Commons Pleas Court from April 5, 1836, to March 14, 1843.

[1][2][4] During the Civil War, Edwin M. Stanton appointed Cock as paymaster in the U.S. Army.

They had eleven children, including two that died in infancy, Thaddeus K., Henry, John M. and George B.