Van Cortlandt Park is a 1,146-acre (464 ha) park located in the borough of the Bronx in New York City. Owned by the New York City Department of Parks and Recreation, it is managed with assistance from the Van Cortlandt Park Alliance. The park, the city's third-largest, was named for the Van Cortlandt family, which was prominent in the area during the Dutch and English colonial periods.

Van Cortlandt Park's sports facilities include golf courses and several miles of paths for running, as well as facilities for baseball, basketball, cricket, cross-country running, football, horseback riding, lacrosse, rugby, soccer, softball, swimming, tennis and track and field. The park also contains five major hiking trails and other walking trails. Its natural features include Tibbetts Brook; Van Cortlandt Lake, the largest freshwater lake in the Bronx; old-growth forests; and outcrops of Fordham gneiss and Inwood marble. Contained within the park is the Van Cortlandt House, the oldest known surviving house in the Bronx, and the Van Cortlandt Golf Course, the oldest public golf course in the country.

The land that Van Cortlandt Park now occupies was purchased by Jacobus Van Cortlandt from John Barrett around 1691. His son Frederick built the Van Cortlandt House on the property, but died before its completion. Later, the land was used during the Revolutionary War when the Stockbridge militia was destroyed by the Queen's Rangers. In 1888, the family property was sold to the City of New York and made into a public parkland. The Van Cortlandt House, later designated as a historic landmark, was converted into a public museum, and new paths were created across the property to make it more passable.

In the 1930s, the Robert Moses–directed construction of the Henry Hudson Parkway and Mosholu Parkway fragmented Van Cortlandt Park into its six discontinuous pieces. The last remaining freshwater marsh in New York State, Tibbetts Brook, was dredged and landscaped to accommodate construction, causing large-scale ecological disruption within the park. The 1975 New York City fiscal crisis caused much of the park to fall into disrepair. Gradual improvements began taking place from the late 1980s on including the addition of new pathways, signage, and security. In 2014, the "Van Cortlandt Park Master Plan 2034" was published.

The forest in what is now Van Cortlandt Park has been around for 17,000 years, since the end of the Wisconsin glaciation. The Wiechquaskeck, a Wappinger people, were among the first recorded people to inhabit in the area now referred to as Van Cortlandt Park. They settled in the area around the 14th or 15th centuries. The Lenapes used the geographic features of the area to support their community; for instance, they used the Tibbetts Brook, Spuyten Duyvil Creek, or Hudson River for fishing, and flatland areas for farming. They formed a village named Keskeskick, whose name roughly translates to "sharp grass or sedge marsh" in the Unami language.

The strip of land on the Hudson River's east bank, between the current-day Spuyten Duyvil Creek and Yonkers, was sold to the Dutch West India Company in the early 17th century. Adriaen van der Donck, a Dutch settler, bought the land from the company in 1646. Van der Donck also paid the Indian chief Tacharew, whose tribe used to live on the land, as a friendly gesture. He named the land "Colen Donck" and built a house upon the land. The house was built between current-day Van Cortlandt Lake and Broadway. It faced south, probably because this was the location of a natural marshland. What is now the parade ground was used by van der Donck for farming.

Van der Donck died in 1655. That year the Munsee bands that lived in the lower Hudson River valley briefly occupied New Amsterdam and attacked Pavonia and Staten Island during what is known as the Peach War. This forced the settlers, including van der Donck's widow, to flee to Manhattan. Following the takeover of the New Netherland colony by the British in 1664, the claim to the estate was awarded to Hugh O'Neale, the new husband of van der Donck's widow. Because the O'Neales lived far away from the land, the claim was awarded to O'Neale's brother-in-law and van der Donck's widow's brother, Elias Doughty, who proceeded to sell off the portions of the property. In 1668, a portion of the land was sold to William Betts, an English turner, and his son-in-law George Tippett, whom Tibbetts Brook would later be named for. This property included the modern park parade grounds. Next, Doughty sold a 2,000-acre (810 ha) tract of land, including the current site of the Van Cortlandt House, to Frederick Philipse, Thomas Delavall, and Thomas Lewis. Philipse bought out Delavall's and Lewis's land shares, making the land part of the Philipsburg Manor, which extended from Spuyten Duyvil Creek to the Croton River in modern Westchester County. Philipse's wife died, and he remarried Olof Stevense Van Cortlandt's daughter, herself a widow. Philipse's daughter Eva later married Jacobus Van Cortlandt, who was Mrs. Philipse's brother.

The land that Van Cortlandt Park now occupies was acquired by Van Cortlandt from Philipse in the mid-to-late 1690s. In 1699, Van Cortlandt dammed Tibbetts Brook in order to power a sawmill (and later, a gristmill,), creating Van Cortlandt Lake as a mill pond in the process. In 1732, Van Cortlandt acquired an additional parcel from the Tippett family. The estate was then passed on to Jacobus's son Frederick Van Cortlandt (1699–1749) and family in 1739; it was once a vast grain plantation. In 1748, Frederick built the Van Cortlandt House on the former Tippett property, but died before its completion. The Van Cortlandts did not primarily live in that house, instead staying in Manhattan most of the time. A family burial ground was created in 1749, later to be known as "Vault Hill." Frederick, who was buried in Vault Hill, had willed the massive home and surrounding lands to his son, James Van Cortlandt (1727–1787).