The Greenwich Country Day School is a co-educational, independent day school in Greenwich, Connecticut, United States, founded in 1926. As of 2005, it enrolled some 840 students from nursery to the 9th grade level. In November 2017, Greenwich Country Day acquired The Stanwich School, making it the only independent nursery through 12th grade co-educational school in Greenwich. The headmaster of GCDS is Adam Rohdie.