| Country: | CHN |
| Type: | Expwy |
| Route: | 0423 |
| Alternate Name: | Leguang Expressway 乐广高速公路 |
| Spur Of: | 4 |
| Spur Type: | Expwy |
| Direction A: | North |
| Terminus A: | Lechang, Guangdong |
| Direction B: | South |
| Terminus B: | Guangzhou, Guangdong |
| Previous Type: | Expwy |
| Previous Route: | 0422 |
| Previous Dab: | Wuhan–Shenzhen Expressway |
| Next Type: | Expwy |
| Next Route: | 0424 |
| Next Dab: | Beijing–Wuhan Expressway |
The Lechang - Guangzhou Expressway, designated as G0423 and commonly abbreviated as Leguang Expressway, is an expressway in Guangdong province, China linking the cities of Lechang and Guangzhou. This expressway is a branch of G4 Jinggang'ao Expressway. It was formerly called S1 Guangle Expressway, then during the introduction of the 71118 extension of the NTHS, was numbered as G4W3 from 2013 to 2017.