| Datong–Zhangjiakou high-speed railway | |
| Other Name: | Dazhang passenger dedicated line |
| Type: | High-speed rail |
| System: | China Railway |
| Status: | In operation |
| Locale: | Hebei Shanxi |
| Start: | Datong South |
| End: | Zhangjiakou |
| Stations: | 5 |
| Routes: | 1 |
| Open: | 30 December 2019 |
| Operator: | China Railway High-speed |
| Linelength: | 141.5243NaN3 |
| Maxincline: | 2.0%, 2.5% in difficult areas |
| Speed Km/H: | 250 |
| Signalling: | Automatic block |
The Datong–Zhangjiakou high-speed railway, also known as the Dazhang passenger dedicated line is a high-speed railway between Zhangjiakou in Hebei province in the east and Datong in Shanxi province in the west. The total length of the main line is about . There are five stations on the whole line. It is connected to the Beijing–Zhangjiakou intercity railway at Zhangjiakou station, and shares the tracks of the Huzhang Passenger Dedicated Line between Zhangjiakou station and Huai'an station. The Da Zhang Passenger Dedicated Line forks out at Huai'an Station and is connected to the Datong–Xi'an passenger railway at Datong South.[1] It forms part of the Beijing–Zhangjiakou–Datong–Taiyuan branch of the Beijing–Kunming corridor.
The commissioning and testing of the line started on 13 September 2019, and it started operations on 30 December 2019.[2]