John Thomas Grant (December 13, 1813 – January 18, 1887)[1] was an American railroad executive.

With his brother James and the unrelated Lemuel Grant he founded an engineering firm called Fannin, Grant and Company which constructed railroads in Georgia, Alabama, Tennessee, Mississippi, Louisiana and Texas, during which time he amassed a large fortune and enormous tracts of land.

[2] The American Civil War largely destroyed his prospects.

He died in Atlanta on January 18, 1887, and was interred in the Grant mausoleum in Oakland Cemetery.

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