| 343 | |
|---|---|
 | |
| Overview | |
| Operator | Go-Ahead London |
| Garage | New Cross |
| Predecessors | Route P3 |
| Night-time | N343 |
| Route | |
| Start | New Cross Gate |
| Via | Brockley Peckham Elephant & Castle London Bridge City Hall |
| End | Aldgate bus station |
London Buses route 343 is a Transport for London contracted bus route in London, England. Running between New Cross Gate and Aldgate bus station, it is operated by Go-Ahead London.