Samuel Milby Harrington (November 13, 1882 – March 31, 1948) was an officer of the United States Marine Corps with the rank of brigadier general.

Finally he decided to follow his father's military career and entered the United States Marine Corps on January 22, 1909.

Harrington was then stationed at Guantanamo Bay Naval Base until June 1911, when he was ordered back to the United States and assigned to the Marine barracks at Norfolk Navy Yard, where he served as post quartermaster.

Harrington remained in Peking, China, until June 1916, when he was ordered to participate in an expeditionary force in Santo Domingo, a duty he served with until 1918.

Harrington returned to the United States in early 1918 and promptly served with a number of different military installations in a myriad of locations.

This school under his command served as main facility, where all Marine officers receive their basic training here, as well as enlisted technicians from many different disciplines.