The Tutting–Kößlarn railway was a branch line from Tutting, in the municipality of Kirchham, to Kößlarn in the province of Lower Bavaria in southern Germany.

decided, however, that only one line could be built and the course alongside the River Inn to Rotthalmünster was judged to be the more favourable than the Kößlarn one that would have run via Wittibreut through hilly terrain.

The K.Bay.Sts.B general manager, Gustav Ebermayer, noted that this submission was not much more promising, but was prepared to undertake the scoping of a Rotthalmünster–Kößlarn route, on payment of 1,000 gold marks, a sum which Kößlarn immediately forwarded.

On 10 August 1904 a law was passed that set things in motion on a 23.07 kilometre long Lokalbahn from Simbach via Tutting to Rotthalmünster.

As early as 2 November 1912, however, another law was passed to extend the line from Tutting to Pocking in order to establish a link between Passau and Simbach.