The Bantan Line (播但線, Bantan-sen) is a railway line that connects Himeji and Wadayama station in Asago City, Hyōgo Prefecture, Japan.

The name refers to the ancient provinces of Harima (播磨) and Tajima (但馬), which the line connects.

The Bantan Railway was purchased by the Sanyō Railway (山陽鉄道, Sanyō Tetsudō) in 1903, which extended the line 13.8km to Wadayama, opening in April 1906, 8 months before the company was nationalised.

The Bantan Railway Co. also built a ~15.7km line from Himeji east to Shikama-Kou (near Kakogawa), opened in 1895 and closed in 1986.

CTC signalling was commissioned between Himeji and Wadayama in 1978, and freight services ceased between 1984 and 1986.