| Country: | TUN |
| Type: | A |
| Route: | 3 |
| Length Km: | 121 |
| Direction A: | East |
| Direction B: | West |
| Terminus A: | Tunis |
| Cities: | Tunis, Medjez el-Bab, Oued Zarga, Bou Salem |
| Established: | July 2005 |
The A3 motorway links Tunis, the capital city of Tunisia, and the city of Bou Salem away. The Tunisian government plans to extend the highway a further from its current limit to reach the Algerian Border, with a total distance of .[1]
The first section, linking Tunis to Medjez el-Bab, opened in July 2005. The whole project, including the section linking Medjez el-Bab to Oued Zarga, 66,3 km long, was inaugurated on February 20, 2006. A 54 kilometer long extension to the city of Bou Salem in the country's northwesternmost governorate Jendouba started in May 2012 and was inaugurated on November 26, 2016.