CCSD

The initials CCSD may represent:
 * Calgary Catholic School District, Alberta, Canada
 * California College San Diego
 * Camden City School District, New Jersey
 * Central Columbia School District, Pennsylvania
 * Chappaqua Central School District, New York
 * Charleston County School District, South Carolina
 * Cherry Creek School District, Colorado
 * Clark County School District, Nevada
 * Clarkstown Central School District, New York
 * Coahoma County School District, Mississippi
 * Cobb County School District, Georgia
 * College Community School District, Iowa
 * Coupled Cluster Singles and Doubles – a method in coupled cluster theory
 * Centre pour la communication scientifique directe, a French research organization in charge of open access repositories for academic publishing