Milton Hannibal Smith (September 12, 1836 – February 22, 1921) was an executive of the Louisville and Nashville Railroad in the late 19th century, and was president of the road from 1891 to 1921.

According to the 1896 Biographical Directory of the Railway Officials of America Smith was born in Chautauqua County, New York, on September 12, 1836.

Previous to 1868 he was successively telegraph operator and clerk, superintendent's office, Mississippi Central Railroad, Holly Springs, Mississippi, and with military railways in northern Alabama during the American Civil War, at the close of which he was appointed local freight agent, Louisville and Nashville, Louisville, Kentucky.

According to the New York Times, Smith was appointed master of transportation on all military railroads in the occupied South during the American Civil War.

The Times notes that during an outbreak of Yellow Fever in Montgomery, Alabama, in 1878, the city quarantined all trains.