Agger Valley Railway (''Aggertalbahn'') is the established name of two
railway line
Rail terminology is a form of technical terminology. The difference between the American term ''railroad'' and the international term ''railway'' (used by the International Union of Railways and English-speaking countries outside the United Sta ...
s in the German state of
North Rhine-Westphalia
North Rhine-Westphalia (german: Nordrhein-Westfalen, ; li, Noordrien-Wesfale ; nds, Noordrhien-Westfalen; ksh, Noodrhing-Wäßßfaale), commonly shortened to NRW (), is a States of Germany, state (''Land'') in Western Germany. With more tha ...
:
*
Siegburg–Olpe railway
The Siegburg–Olpe railway or Agger Valley Railway (german: Bahnstrecke Siegburg–Olpe or ''Aggertalbahn'') is a single-tracked, non-electrified branch line in the German state of North Rhine-Westphalia. Part of a direct link Cologne-Kalk–Over ...
, the historic Agger Valley Railway that is now only open between Overath and Dieringhausen
*
Cologne-Kalk–Overath railway, which extended the above-mentioned line in 1910 in order to provide a direct link from Cologne and which then left the valley of the Agger river
{{dab