The Zofingen–Wettingen railway line is a standard-gauge line in Switzerland. It was opened on 6 September 1877 between Zofingen and Baden Oberstadt together with the Aarau–Suhr railway by the Swiss National Railway (Schweizerische Nationalbahn; SNB). The opening of the adjacent Baden Oberstadt–Wettingen section together with the Wettingen–Effretikon railway, which represented its continuation to the east, was delayed until 15 October 1877 due to construction delays at the Limmat bridge. The SNB went bankrupt in 1878, after which the line was acquired by the Swiss Northeastern Railway (Schweizerische Nordostbahn; NOB) from the bankrupt estate. The NOB became part of the Swiss Federal Railways with the nationalisation of the company in 1902.