The Quincy Quarries Reservation is a state park and recreation area in Quincy, Massachusetts. It is also quite a historic site, being where the first railroad in the entire United States was located.

The Quincy Quarries Reservation traces its roots back to the 1825 when the town of Quincy was chosen as the source of stone for the Bunker Hill Monument in Charlestown, Massachusetts. In order to haul the granite from the site to its destination, the Granite Railway was created in March 1826, which also marked the first creation of a railroad in the US. It was designed and built by Gridley Bryant, a noted railway pioneer.

The site of the Quincy Quarries Reservation was later used as a quarry until it closed down in 1963. It was then turned into an outdoor destination when rock climbers discovered the site soon afterwards. However, it was not until 1985 when it became a part of the Massachusetts state parks system.