| Image Coa: | DEU Niederroßbach COA.svg |
| Coordinates: | 50.6417°N 8.0344°W |
| Image Plan: | Niederroßbach im Westerwaldkreis.png |
| State: | Rheinland-Pfalz |
| District: | Westerwaldkreis |
| Verbandsgemeinde: | Rennerod |
| Elevation: | 495 |
| Area: | 4.39 |
| Postal Code: | 56479 |
| Area Code: | 02664 |
| Licence: | WW |
| Gemeindeschlüssel: | 07 1 43 274 |
| Website: | www.rennerod.de |
| Mayor: | Bernd Schäfer[1] |
| Leader Term: | 2019 - 24 |
Niederroßbach is an Ortsgemeinde – a community belonging to a Verbandsgemeinde – in the Westerwaldkreis in Rhineland-Palatinate, Germany.
The community lies in the Westerwald between Siegen and Limburg an der Lahn. Through the community flow the Ortsbach and the Roßbach. Niederroßbach belongs to the Verbandsgemeinde of Rennerod, a kind of collective municipality. Its seat is in the like-named town.
Niederroßbach's neighbours are Oberroßbach, Fehl-Ritzhausen, Neustadt and Zehnhausen bei Rennerod.
In 1431, Niederroßbach had its first documentary mention.
The council is made up of 13 council members, including the extraofficial mayor (Bürgermeister).
| FW | Total | |||
| 2004 | 7 | 5 | 12 seats |
Running right near the community are Bundesstraßen 54, linking Limburg an der Lahn with Siegen, and 255, leading from Montabaur to Herborn. The nearest Autobahn interchange is Haiger/Burbach on the A 45 (Dortmund - Hanau), some 17 km away. Between Niederroßbach and Neustadt once lay a halt on the now abandoned Westerwaldquerbahn (railway). The nearest InterCityExpress stop is the railway station at Montabaur on the Cologne-Frankfurt high-speed rail line.