The Jamaica station is a major train station of the Long Island Rail Road located in Jamaica, Queens, New York City. With weekday ridership exceeding 200,000 passengers, it is the largest transit hub on Long Island, the fourth-busiest rail station in North America, and the second-busiest station that exclusively serves commuter traffic. It is the third-busiest rail hub in the New York area, behind Penn Station and Grand Central Terminal. Over 1,000 trains pass through each day, the fourth-most in the New York area behind Penn Station, Grand Central Terminal, and Secaucus Junction.

The Long Island Rail Road, often abbreviated as the LIRR, is a railroad in the southeastern part of the U.S. state of New York, stretching from Manhattan to the eastern tip of Suffolk County on Long Island. The railroad currently operates a public commuter rail service, with its freight operations contracted to the New York and Atlantic Railway. With an average weekday ridership of 354,800 passengers in 2016, it is the busiest commuter railroad in North America. It is also one of the world's few commuter systems that runs 24/7 year-round. It is publicly owned by the Metropolitan Transportation Authority, which refers to it as MTA Long Island Rail Road. In 2023, the system had a ridership of 75,186,900, or about 253,800 per weekday as of the fourth quarter of 2023.