The Howard Van Vleck Arboretum is a 3.5-acre (1.4 ha) arboretum located on the grounds of the Montclair Art Museum, 3 South Mountain Avenue, Montclair, in Essex County, New Jersey. The arboretum is open daily without charge.
The arboretum first began in 1940 as museum landscaping by horticulturist Howard Van Vleck, and has been named in his honor. It was redesigned and partially replanted circa 2001 during the museum's expansion.
Coordinates: 40°49′07″N 74°13′30″W / 40.8186°N 74.2249°W / 40.8186; -74.2249