James Stevenson Ewing (July 19, 1835 – February 7, 1918) was an American diplomat and lawyer.

James Stevenson Ewing was born in Woodford County, Illinois.

Ewing went to Illinois Wesleyan University, and then graduated from Centre College in Danville, Kentucky.

Ewing was admitted to the Illinois bar and practiced law in Bloomington.

He served as extraordinary envoy and minister plenpoteniary to Belgium from 1893 to 1897 and was appointed by President Cleveland.