The Osaka Loop Line is a railway line in Japan operated by West Japan Railway Company (JR West). It encircles central Osaka. This line is well known for its efficient service running two tracks, one counter-clockwise and one clockwise around the heart of metropolitan Osaka.

Carriages are a distinctive orange colour with white JR graphics on the front, rear and sides. Most trains consist of 8 carriages and are operated by a driver and conductor. Each carriage can accommodate approximately 150 people in comfort or 250 at rush hour.