On December 7, 1993, a mass shooting occurred aboard a Long Island Rail Road (LIRR) train in Garden City Park, New York, United States. As the train arrived at the Merillon Avenue station, passenger Colin Ferguson began firing at other passengers with a semi-automatic pistol. Six of the victims were killed and nineteen others were wounded before Ferguson was tackled and held down by other passengers on the train.

Garden City Park is a hamlet and census-designated place (CDP) located in the Town of North Hempstead in Nassau County, New York, on Long Island. It's a suburb of New York City, located approximately 20 miles (32 km) from Midtown Manhattan. The population was 7,806 at the 2010 census.