Benedictine Military School (also referred to as Benedictine or BC) is a Catholic military high school for boys located in Savannah, Georgia, United States. It was founded in 1902 by the Benedictine monks of Savannah Priory, which still operates the school under the auspices of the Diocese of Savannah.

Starting in 1874, Benedictine monks had gone to Georgia from St. Vincent Abbey in Latrobe, Pennsylvania, at the invitation of William Hickley Gross, C.Ss.R., at that time the Roman Catholic Bishop of Savannah. He was acting in response to a mandate given to all the Catholic bishops of the nation at the Second Plenary Council of Baltimore, held in 1866, to establish missions to the newly emancipated African American slaves. Two separate attempts were made to establish such a mission. By about 1900, both had failed.

Having decided to place themselves under the authority of Leo Haid, O.S.B., the Abbot Nullius of Belmont Abbey in North Carolina, ten monks established a monastery in the city at 31st and Habersham Streets, where they served Sacred Heart Parish. Recognizing the need for a Catholic boys' school, they established Benedictine College in 1902. In 1906, the groundbreaking ceremony was performed on the ground that would become the school's campus on Bull Street. In 1920, the school changed its name to Benedictine School because of the confusion that Benedictine was a college. However, the nickname "BC" stuck.

In 1963, the school moved to its current campus located on Seawright Drive on the south side of Savannah. Shortly after moving to the new location, the priory elected to return to the authority of St. Vincent Archabbey in Latrobe. Along with this change came the removal of the four year mandatory military program, with reduction to two years mandatory.

Benedictine's curriculum is College Preparatory. Advanced Placement classes are offered in Language, Literature, Calculus, Environmental Science, Human Geography, Biology, Government, American History, Economics and European History, in conjunction with a religious curriculum that caters to Catholics.

The JROTC program at Benedictine, with over 350 cadets, is one of the largest in the Sixth ROTC Brigade.

Up until 2004, BC had always competed in Georgia's highest classification. In 2004, the school dropped to AAA. In 2008, to AA. In 2010, BC returned to Region 3-AAAAA. Currently, BC is in Region 3-AAAA of the GHSA.^{[citation needed]}

The Cadet baseball team won state championships in 1961, 2014, and 2018.