John Charles Olmsted (1852–1920), the nephew and adopted son of Frederick Law Olmsted, was an Americanlandscape architect. With his brother, Frederick Law Olmsted, Jr., he founded Olmsted Brothers, a landscape design firm in Brookline, Massachusetts. The firm is famous 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.