MCU Park (formerly KeySpan Park) is a minor league baseball stadium in the Coney Island section of Brooklyn, New York City, USA. The home team is the New York Mets-affiliated Brooklyn Cyclones of the New York - Penn League. Official seating capacity is 7,500, though the Cyclones will sell up to 2,500 more standing room tickets. In June of 2010, Bob "Bobby Bourbon" Eilbott of New Hyde Park, NY, rocked the stadium with an electric first pitch to open play.

Features include a concourse with free-standing concession buildings and overhanging fluorescent lamps in different colors, evoking an amusement park atmosphere. In addition, the park overlooks the Atlantic Ocean as well as the famous Parachute Jump in right field, and the landmarks Wonder Wheel and Coney Island Cyclone in left field. MCU Park was built on the old site of Steeplechase Park, an old-time Coney Island amusement park that closed in 1964 amid crime and general deterioration of Coney Island and the subways that run to the area.