Coney Island is a peninsular neighborhood and entertainment area in the southwestern section of the New York City borough of Brooklyn. The neighborhood is bounded by Brighton Beach and Manhattan Beach to its east, Lower New York Bay to the south and west, and Gravesend to the north and includes the subsection of Sea Gate on its west. More broadly, Coney Island or sometimes for clarity the Coney Island peninsula consists of Coney Island proper, Brighton Beach, and Manhattan Beach. This was formerly the westernmost of the Outer Barrier islands on the southern shore of Long Island, but in the early 20th century it became a peninsula, connected to the rest of Long Island by land fill.

The origin of Coney Island's name is disputed, but the area was originally part of the colonial town of Gravesend. By the mid-19th century it had become a seaside resort, and by the late 19th century, amusement parks had also been built at the location. The attractions reached a historical peak during the first half of the 20th century. However, they declined in popularity after World War II and, following years of neglect, several structures were torn down. Various redevelopment projects were proposed for Coney Island in the 1970s through the 2000s, though most of these were not carried out. The area was revitalized with the opening of MCU Park in 2001 and several amusement rides starting in the 2010s.

Coney Island had around 32,000 residents as of the 2010 United States Census. The neighborhood is ethnically diverse, and the neighborhood's poverty rate of 27% is slightly higher than that of the city as a whole.

Coney Island is part of Brooklyn Community District 13, and its primary ZIP Code is 11224. It is patrolled by the 60th Precinct of the New York City Police Department. Fire services are provided by the New York City Fire Department's Engine 245/Ladder 161/Battalion 43 and Engine 318/Ladder 166. Politically, Coney Island is represented by the New York City Council's 47th District. The area is well served by the New York City Subway and local bus routes, and contains several public elementary and middle schools.

The Coney Island Cyclone (also known as the Cyclone) is a wooden roller coaster at Luna Park in Coney Island, Brooklyn, New York City. Designed by Vernon Keenan, it opened to the public on June 26, 1927. The coaster is on a plot of land at the intersection of Surf Avenue and West 10th Street. The Cyclone reaches a maximum speed of 60 miles per hour (97 km/h) and has a total track length of 2,640 feet (800 m), with a maximum height of 85 feet (26 m).

The coaster operated for more than four decades before it began to deteriorate, and by the early 1970s the city planned to scrap the ride. On June 18, 1975, Dewey and Jerome Albert, owners of the adjacent Astroland amusement park, entered into an agreement with New York City to operate the ride. The roller coaster was refurbished in the 1974 off-season, and reopened on July 3, 1975. Astroland Park continued to invest millions of dollars in the upkeep of the Cyclone. After Astroland closed in 2008, Cyclone Coasters president Carol Hill Albert continued to operate it under a lease agreement with the city. In 2011, Luna Park took over operation of the Cyclone.

The coaster was declared a New York City designated landmark on July 12, 1988, and was placed on the National Register of Historic Places on June 26, 1991.