John Charles Olmsted was an American landscape architect. The nephew and adopted son of Frederick Law Olmsted, he worked with his father and his younger brother, Frederick Law Olmsted Jr., in their father's firm. After their father retired, the brothers took over leadership and founded Olmsted Brothers as a landscape design firm. The firm became well known for designing many urban parks, college campuses, and other public places. John Olmsted's body of work from over 40 years as a landscape architect has left its mark on the American urban landscape.

Frederick Law Olmsted was an American landscape architect, journalist, social critic, and public administrator. He is considered to be the father of landscape architecture in the United States. Olmsted was famous for co-designing many well-known urban parks with his partner Calvert Vaux. Olmsted and Vaux's first project was New York's Central Park, which led to many other urban park designs, including Prospect Park in Brooklyn and Cadwalader Park in Trenton, New Jersey. He headed the preeminent landscape architecture and planning consultancy of late 19th century United States, which was carried on and expanded by his sons, Frederick Jr. and John C., under the name Olmsted Brothers.