Railroad Museum of Long Island

40°55′13″N 72°39′58″W / 40.920320°N 72.666060°W / 40.920320; -72.666060

Railroad Museum of Long Island
The Railroad Museum of Long Island's Riverhead location in 2024
Established1990
LocationRiverhead and Greenport
Suffolk County, New York
United States
TypeRailway museum
FounderRailroad Museum of Long Island Members & Engine 39 Committee
Public transit accessRiverhead & Greenport stations, Long Island Rail Road
Websitewww.rmli.org

The Railroad Museum of Long Island – also known by its reporting mark, RMLI – is a railway museum based on the North Fork of Long Island, in Suffolk County, New York, United States. It has two locations: the main location in Riverhead, and a satellite location in Greenport, west of the North Ferry to Shelter Island. Both facilities contain active model railroad displays and gift shops.