The Coimbatore–Mettupalayam branch line connects Coimbatore Junction and Mettupalayam in Tamil Nadu.

The Coimbatore–Mettupalayam dual gauge 5 ft 6 in (1,676 mm) broad-gauge, 1,000 mm (3 ft 3+3⁄8 in) metre gauge[1] line was opened to traffic in 1873.

The Coimbatore–Mettupalayam section was converted to complete broad gauge in 1907.

Dual gauge was retained between Podanur (PTJ), Coimbatore_Junction (CBE) and Coimbatore_North_Junction (CBF).,[2][3] The electrification of Coimbatore–Mettupalayam branch line was completed in 2015.

Suburban areas are connected by this line.