Thomas Greely Stevenson (February 3, 1836 – May 10, 1864) was a general in the Union Army during the American Civil War.

He was 25 years old when the Civil War began and had risen from private to major in the Massachusetts Militia at that time.

Following the capture of New Bern significant Union reinforcements arrived in North Carolina and Stevenson assumed command of a brigade under John G. Foster.

When much of the Union forces in North Carolina were recalled to Virginia, Foster's command, including Stevenson's brigade, were left behind.

His brother, Robert Hooper Stevenson, was a colonel and brevet brigadier general in the Union Army.