The Kintetsu 5800 series (近鉄5800系), nicknamed the "L/C car", is an electric multiple unit (EMU) train type operated by the private railway operator Kintetsu Railway on standard gauge (1,435 mm (4 ft 8+1⁄2 in)) commuter services in the Kansai area since 1998.

[2] The series won the Laurel Prize in 1998 by the Japan Railfan Club for having the most innovative features for trains entering service that year.

[1] In previous Kintetsu 2600 series trainsets and related counterparts, fixed perpendicular seats were a common feature on these services.

[1] By March of that year, the experiment was deemed a success and the feature would be implemented onto trains being ordered for the long-distance services.

Other private railways such as Tobu, Keikyu, Keio, and Seibu would later implement rotating longitudinal/transverse seating on future rolling stock additions.