Isham Warren Garrott (c. 1816 – June 17, 1863) was a colonel in the Confederate States Army during the American Civil War.

Garrott was killed during the Vicksburg Campaign before his commission as a brigadier general was confirmed by the Confederate Senate or delivered and became effective.

Garrott was also an incorporator of the Marion and Alabama River Transportation Company and President of the Board of Trustees of Howard College.

Alabama Governor Andrew B. Moore sent Garrott to North Carolina as a commissioner to enlist his home state's aid in joining the secession movement.

Apparently, Garrott was reburied in Vicksburg's Cedar Hill/Confederate Cemetery; however due to the misspelling of his surname and incorrect rank-his Generals commission was received after his death-apparently lead to reporting that his remains were not moved from his first burial place.