| Shin-Keisei N800 series | |
|---|---|
 Set N851 in revised livery, December 2021 | |
| In service | 2005–present |
| Manufacturer | Nippon Sharyo |
| Replaced | 800 series |
| Constructed | 2005– |
| Entered service | 29 May 2005 |
| Number built | 30 vehicles (5 sets) |
| Number in service | 30 vehicles (5 sets) |
| Formation | 6 cars per set |
| Fleet numbers | N811–N851 |
| Operators |  Shin-Keisei |
| Depots | Kunugiyama |
| Lines served | |
| Specifications | |
| Car body construction | Stainless steel |
| Car length | 18,000 mm (59 ft 1 in) |
| Width | 2,768 mm (9 ft 1.0 in) |
| Doors | 3 pairs per side |
| Maximum speed | 120 km/h (75 mph) |
| Acceleration | 3.5 km/(h⋅s) (2.2 mph/s) |
| Deceleration | 4.0 km/(h⋅s) (2.5 mph/s) (service) 4.5 km/(h⋅s) (2.8 mph/s) (emergency) |
| Electric system(s) | 1,500 V DC |
| Current collector(s) | Overhead wire |
| Bogies | FS-564S (motored), FS-064S (trailer) |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
The Shin-Keisei N800 series (新京成N800形) is an electric multiple unit (EMU) train type operated by the private railway operator Shin-Keisei Electric Railway on the Shin-Keisei Line in Chiba Prefecture, Japan, since May 2005.