Gilmour Academy is an independent, Roman Catholic, coeducational, college-preparatory school in the Cleveland suburb of Gates Mills, Ohio. Founded in 1946 by the Brothers of Holy Cross, it offers a Montessori preschool program and traditional kindergarten through grade 12. A boarding program is available to students in grades 7-12. Gilmour Academy is chartered through the state of Ohio; accredited through the Independent School Association of Central States (ISCACS) and the North Central Association of Colleges and Schools (NCA); and a member of the National Association of Independent Schools (NAIS), the Ohio Association of Independent Schools (OAIS), and the Coalition of Essential Schools (CES).
Gilmour Academy was founded in 1946 when a group of Brothers of Holy Cross from the University of Notre Dame, Indiana began a select boarding school which was named in honor of Bishop Richard Gilmour, the second Bishop of the Catholic Diocese of Cleveland and a champion of Catholic education. The school opened in 1946 with a faculty of nine Brothers and an initial enrollment of 45 eighth and ninth grade boys. The following year, the school shifted to a four-year curriculum. Gilmour added its Middle School in 1973. In 1982, Gilmour merged with Glen Oak School, making it a coeducational institution. The Lower School and Montessori preschool program were established in 1985, followed by a traditional kindergarten and grades one through 12.

Ohio High School Athletic Association State Championships
Boys Golf - 1991, 1992, 1993, 1994, 2010 and an individual state champion in 2003, 2009, 2010, 2011, & 2012
Boys Track and Field – 1971
Girls Track and Field – 2005, 2006, 2007*, 2009
Girls Cross country - 2006
 
Notable Alumni
Michael Chaney, professor of English at Dartmouth College and author of Fugitive Vision: Slave Image and Black Identity in Antebellum Narrative.
Gary Cohn, president and COO of Goldman, Sachs & Co.
Matthew J. Dolan, former Republican Ohio state representative.
Paul Dolan, chairman/CEO of the Cleveland Indians Major League Baseball organization.
Ray Gricar, former District Attorney of Centre County, Pennsylvania.
Douglas Kenney, writer, actor, and producer; best known for writing Caddyshack and National Lampoon's Animal House.
Russell Potter, professor of English at Rhode Island College and author of Arctic Spectacles: The Frozen North in Visual Culture.