| Country: | DEU |
| Type: | A |
| Route: | 39 |
| Map Custom: | yes |
| Length Km: | 57 |
| Terminus A: | Salzgitter |
| Terminus B: | Wolfsburg |
| States: | Lower Saxony |
| Previous Type: | A |
| Previous Route: | 38 |
| Next Type: | A |
| Next Route: | 40 |
is an autobahn in northern Germany. It currently connects the cities of Salzgitter, Braunschweig and Wolfsburg, with a planned extension to Lüneburg.
The A 39 begins north of Wolfsburg and ends at the A 7 close to Salzgitter. It crosses the A 2 south of Wolfsburg close to Königslutter.
|- Under construction |-|colspan="3"|---- / |}