| Country: | DEU |
| Type: | B |
| Route: | 429 |
| Map: | B429_Verlauf.svg |
| Length Km: | 4.9 |
| Terminus A: | A480, Wettenberg |
| Terminus B: | B49, Giessen |
| States: | Hesse |
The Bundesstraße 429 is a German federal highway. Forming part of the Gießener Ring, E40 and E44, it runs from A480 in Wettenberg to B49 in Giessen.