The Wehra Valley Railway (German: Wehratalbahn) was a 19.7 km long branch line from Schopfheim to Bad Säckingen in southwestern Germany, that was electrified in 1913 at the same time as the Wiesen Valley Railway. For part of its length it followed the river of the same name. The line runs through the Fahrnau Tunnel (Fahrnauer Tunnel) which, at that time, was one of the longest railway tunnels (3.169 km) in Germany. The Wehra Valley Railway was intended as a strategic railway circumnavigating Switzerland near Basle and was laid ready to take a second track.

Wehra Valley Railway
Technical
Line length	19.7 km (12.2 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Electrification	AC overhead 15 kV/15 Hz (1913-1936) 15 kV/16.7 Hz (1936-1977)
Route map Legend Wiesen Valley Railway from Basel Bad Bf 0,0 Schopfheim Wiesen Valley Railway to Zell (Wiesental) 2,6 Fahrnau T. (closed in 1924) 2,66 Fahrnau Tunnel (3169 m) 6,3 Hasel (Baden) 9,2 Wehr (Baden) Wehra 11,2 Öflingen 13,9 Brennet (Wehratal) Bundesstraße 34 High Rhine Railway from Basel Bad Bf 19,7 Bad Säckingen High Rhine Railway to Konstanz

Passenger services were withdrawn from the line on 23 May 1971. Goods traffic between Bad Säckingen and Wehr continued to run until 1 September 1990. On 31 December 1994 the line was closed.

In a local council meeting on 19 April 2005, the town of Wehr (Baden) called for an expert opinion to determine whether the line could be reactivated. The report from Tübingen-based local transport advisor Ulrich Grosse was positive, although its restoration would be relatively expensive and only possible for a short time. Initially the route will be protected from being built on. Currently checks are being carried out to see whether the Fahrnau Tunnel can be reopened.