| Country: | CHN |
| Type: | G |
| Route: | 203 |
| Map: | G203-路线图.svg |
| Length Km: | 720 |
| Terminus A: | Suihua in Heilongjiang |
| Terminus B: | Shenyang in Liaoning |
| Previous Type: | G |
| Previous Route: | 202 |
| Next Type: | G |
| Next Route: | 204 |
China National Highway 203 (G203) runs from Suihua in Heilongjiang to Shenyang in Liaoning.[1] It is 720 kilometres in length and runs straight south from Mingshui, going via Songyuan.[2]
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