is a railway line owned by West Japan Railway Company (JR West) in Japan, operating between Aioi Station in Aioi, Hyà Âgo and Higashi-Okayama Station in Okayama, Okayama. The Akà  Line operates south of and approximately parallel to both the Sanyà  Main Line and the San'yà  Shinkansen, with all three lines paralleling the coastline of the Seto Inland Sea.
The entire line is single track.
The line is operated in two sections:
No trains terminate at either of the official terminal stations. At Aioi all trains operate a through service to/from on the Sanyo Main Line with many services continuing further on JR West's Kansai region Urban Network through to Osaka, Kyoto, Maibara & Tsuruga.
, the furthest in distance that Ako Line trains operate to/from is Tsuruga, while the longest service in time is the first weekday service departing Banshà «-Akà  at 05:33 which operates a Rapid service to Maibara arriving at 10:13 with a running time of 4 hours, 40 minutes.
At Higashi-Okayama all trains operate a through service to/from and beyond on the Sanyo Main Line.
All trains on the line are Local services, stopping at every station. "Rapid" and "Special Rapid" trains to/from Kyoto and beyond operate as Local trains between Aioi and Banshà «-Akà Â.
The initial section between Aioi and Banshu-Ako opened in 1951, and the line was opened progressively, to Hinase in 1955, Inbe in 1958, and Higashi-Okayama in 1962. The Aioi - Banshu-Ako section was electrified in 1961, and the rest of the line in 1969.
CTC signalling was commissioned between Higashi-Okayama and Banshu-Ako in 1983.
Main line alternate routes
This article incorporates material from the corresponding article in the Japanese Wikipedia.