Class 13 may refer to.
In 1922 the Deutsche Reichsbahn began to develop a renumbering plan to standardize the numbering of steam locomotives that had been taken over from the state railways (Länderbahnen).
The railway vehicle classes covered by this list of DRG locomotives and railbuses belonged to the Deutsche Reichsbahn-Gesellschaft or DRG (1924–37) and its successor, the Deutsche Reichsbahn or DRB (post 1937).
This list contains the locomotives and railbuses of the Grand Duchy of Oldenburg State Railways (Großherzoglich Oldenburgische Eisenbahn orGOE).
The Oldenburg Class S 5 steam engine was a German locomotive built for the Grand Duchy of Oldenburg State Railways (Großherzoglich Oldenburgische Staatseisenbahnen) between 1909 and 1913.
The Prussian Class S 3s were saturated steam locomotives developed by Hanomag for the Prussian state railways and were built from 1893.