| New Dongtan City | |
| Settlement Type: | 동탄신도시 |
| Subdivision Type: | Country |
| Subdivision Name: |  South Korea |
| Utc Offset: | +9 |
| Timezone: | South Korea Time |
| Rr: | Dongtan sin dosi |
| Mr: | Tongt'an sin tosi |
Dongtan is a township in Hwaseong, Gyeonggi, South Korea, with many shops and restaurants. There are also 4 residential skyscrapers of 70-80 floors. They are collectively called Metapolis and contain a shopping mall. Dongtan also has the Suseo–Pyeongtaek high-speed railway (SRT) that goes from Suseo station to Jije station. The subway is long as the third longest in the world. It also has the longest tunnel for a subway that goes at a speed of .
Dongtan Station will be the terminus of the first line of the GTXhigher-speed train which enters into service in March 2024.[1]