The Annaberg-Buchholz–Flöha railway (German: Bahnstrecke Annaberg-Buchholz unt Bf–Flöha), also called the Zschopau Valley Railway (Zschopautalbahn) is a branch line in the German state of Saxony. It links Annaberg-Buchholz lower station (German: unterer Bahnhof, abbreviated as unt Bf) and the Vejprty–Annaberg-Buchholz railway line to Flöha, running through the Zschopau Valley via Wolkenstein and Zschopau. It has been operated since 2001 by the DB Regio subsidiary Erzgebirgsbahn.