| Country: | DEU |
| Type: | B |
| Route: | 188 |
| Map: | B 188.JPG |
| Length Km: | 214 |
| Direction A: | West |
| Terminus A: | B3 |
| Direction B: | East |
| Terminus B: | B5 |
| States: | Lower Saxony, Saxony-Anhalt, Brandenburg |
The Bundesstraße 188 or B 188 is one of the longer German federal highways crossing northern Germany. It connects the B3 with the B5.