| Template: Infobox high-ranking street / maintenance / GN-N | |
| N 3 in Guinea | |
| map | |
| Basic data | |
| Operator: | |
| Start of the street: | Kolaboui ( N3 ) |
| End of street: | Kamsar |
| Overall length: | 33 km |
| Requirement for use: | no |
The N20 is a trunk road in Guinea that begins in Kolaboui at the exit of the N3 and ends in Kamsar . It is 33 kilometers long.