thumb|250px|Linemap of Shin-Keisei Electric Railway
thumb|150px|Shin-Keisei Electric Railway [[Mon (emblem)|mon]]
The was a private railway in Chiba Prefecture, Japan. It connects Narashino and Matsudo. It was a subsidiary of Keisei Electric Railway.
It also operated the following bus company subsidiaries.
- Funabashi Shin-Keisei Bus
- Matsudo Shin-Keisei Bus
Lines
The company operated one line, the Shin-Keisei Line, between Matsudo and Keisei Tsudanuma.
Rolling stock
- 8800 series (since 1986)
- 8900 series (since 1993)
- N800 series (since 2005)
- 80000 series (since 27 December 2019)
All trains were based at Kunugiyama and Tsudanuma Depots.
<gallery>
File:Shikeisei-Type8800_8801-1.jpg|Shin-Keisei 8800 series
File:Shikeisei-Type8900_8931.jpg|Shin-Keisei 8900 series
File:Shikeisei-TypeN800_N851.jpg|Shin-Keisei N800 series
File:Shikeisei-Type80000_80021.jpg|Shin-Keisei 80000 series
</gallery>
Former rolling stock
- 800 series (1971 – July 2010)
- 8000 series (1978 – November 2021)
<gallery>
File:Shin-Keisei Type 800.jpg|Shin-Keisei 800 series
File:Shinkeisei8000pink-wiki.jpg|Shin-Keisei 8000 series
</gallery>
History
After World War II, the ownership of the right-of-way of an uncompleted Imperial Japanese Army military railway line was transferred to Keisei. Shin-Keisei was established as a subsidiary of Keisei on 23 October 1946 to construct and operate the line. The first section of the line, from to , was opened on 27 December 1947, with a track gauge of and electrified at 1,500 V DC overhead. The company's entire fleet of trains was scheduled to be reliveried in the new colour scheme, with the first train, an 8800 series set entering service from 29 August 2014.
Merger with Keisei Electric Railway
In an announcement made on 31 October 2023, Shin-Keisei Electric Railway revealed that it would be merged into the parent Keisei Electric Railway. The acquisition was completed on 1 April 2025, and the line was renamed as the Keisei Matsudo Line. The merger also resulted in the bus company subsidiaries being acquired by parent company, Keisei Electric Railway.