| Country: | CHN |
| Type: | Expwy |
| Route: | 1131 |
| Alternate Name: | Muyan Expressway 牡延高速公路 |
| Spur Type: | Expwy |
| Spur Of: | 11 |
| Direction A: | North |
| Terminus A: | in Ning'an, Mudanjiang, Heilongjiang |
| Direction B: | South |
| Terminus B: | in Yanji, Yanbian Korean Autonomous Prefecture, Jilin |
| Previous Type: | Expwy |
| Previous Route: | 1119 |
| Next Type: | Expwy |
| Next Route: | 12 |
The G1131 Mudanjiang–Yanji Expressway, also referred to as the Muyan Expressway, is an under construction expressway in China that will connect Mudanjiang, Heilongjiang to Yanji, Jilin.[1] [2] The first section from Wangqing County to Yanji was opened to traffic in October 2011.[3]