The Gyeongnam Line (æ ¶åÂÂç·Â, Keinan-sen) was a railway line of the Chà Âsen Railway (Chà Âtetsu) of colonial-era Korea, located in South Gyeongsang Province.
On 13 July 1918, the privately owned Chà Âsen Southern Railway was granted a concession to build a railway line from Songjeongni (now Gwangju Songjeong) to Masan, but it wasn't until June 1922 that work on the first section, from Masan to Jinju, began. The line was not yet opened when the Chà Âsen Southern Railway merged with five other privately owned railways to create the Chà Âsen Railway on 1 September 1923; it was only three months after the merger, on 1 December 1923, that the first section, from Masan to Gunbuk, was opened, under the name Gyeongnam Line. The remaining section to Jinju was opened on 15 June 1925. On 1 April 1931, the state-owned Chà Âsen Government Railway bought the Gyeongnam Line, merging it with its own Masan Line to create the Gyeongjeon Nambu Line running from Samnangjin to Jinju.