The Dreieich Railway (Dreieichbahn) is a single-track, non-electrified branch line in the Frankfurt Rhine-Main area in the German state of Hesse.

Colloquially, the RMV route 61 (RB 61) service is referred to as the Dreieichbahn, which continued beyond Ober-Roden on the Rodgau Railway to Dieburg.

[4] The line was mainly for commuters from parts of modern Dreieich between Dreieich-Buchschlag (then: "Buchschlag-Sprendlingen") and Rödermark–Ober-Roden (then: "Ober-Roden") to Frankfurt.

At the beginning of the 1980s, the Dreieich Railway was listed by Deutsche Bundesbahn (DB) as a vulnerable line.

The lobbying of the Interessengemeinschaft Dreieichbahn ("Dreieich Railway interest group", IGDB) and municipal politics prevented the closure of the line.

The costs were borne by Deutsche Bahn (DB), the state of Hesse and neighbouring municipalities.

Regional trains run through to Frankfurt (Main) Hauptbahnhof hourly from Monday to Friday (RB 61).

The line is contracted to be operated from 30 June 2016 until the timetable change in 2027 with new Pesa Link sets.

It would create faster transfer connections by rail to Frankfurt Airport and towards Mainz and Wiesbaden.

Due to its high cost and a lack of funds, the project can only be realised in the medium term.