The Seaside Narrow-Gauge Railway (formerly the Gryfice Narrow Gauge Railway) is a narrow-gauge railway in the Gryfice district in Western Pomerania, Poland. This is the remaining line from a much larger network, currently operating as a tourist railway.

The Prussian Government authosised the building of the original narrow gauge railway at the end of the 19th century. The first section of line from Greifenberg (since 1945 called Gryfice) to Horst (today Niechorze) opened on 1 July 1896 with a track gauge of 750 mm. During 1912 this was widened to the current 1000 mm gauge. During 1913 the line was entended from Horst to Treptow where it met the Treptow to Deep railway opened the previous year.^[1]

The European Union funded the revitalisation of the railway during 2011–2014. This included restoring the stations at Rewal and Pogorzelica, two locomotives and some carriages. The EU also funded refurbishment of Trzęsacz, Śliwin and Niechorze stations.^[1]

The current operation is in two parts: Gryfice - Trzęsacz and Trzęsacz - Pogorzelica. The Trzęsacz - Pogorzelica serves the seaside resort towns and offers a service of 5 return journeys between 10am and 6pm. The Gryfice - Trzęsacz section is served with one train pair, supplemented in the summer by an additional pair.^[2]