John Stocker Coffin Knowlton (December 11, 1798 – June 11, 1871) was an American newspaper editor, publisher and politician who served in both branches of the Massachusetts legislature, as the Mayor of Worcester, Massachusetts, and as the Sheriff of Worcester County, Massachusetts.

[3] Knowlton was born in Hopkinton, New Hampshire[1] to Daniel Knowlton and Mary Stocker.

[3] Knowlton attended Hopkinton and Phillips Andover academies, and graduated from Dartmouth College[4] in 1823.

[3] Knowlton married Anna W. Hartwell, of Littleton, Massachusetts[3] on September 17, 1829.

He died in Worcester on June 11, 1871.