The Stoom Stichting Nederland (SSN) is a railway museum in Rotterdam, Netherlands, founded in 1976.
The SSN owns a motive power depot which includes a locomotive shed, in which major repairs can be carried out.
A turntable, platforms and locomotive facilities also form part of the site.
In the museum's engine shed, a large collection of steam locomotives from Germany and the Netherlands may be viewed.
Several times a year special train services run throughout the Netherlands and may sometimes be seen in Germany too.