Mattituck is a station on the Main Line (Greenport Branch) of the Long Island Rail Road.

The station was originally named Mattetuck and opened on July 29, 1844.

The station contained a total of three "produce storage" facilities, which still exists today, one of which is a real estate office.

This station has one high-level side platform south of the tracks that is long enough for one and a half cars to receive and discharge passengers.

The Main Line has three tracks at this location: one is a siding and one is a freight spur.