The MR3 road, also known as the Matsapha-Mbabane-Ngwenya road or Road No. MR3, is a major highway of Swaziland. It is one of the most heavily trafficked roads in the country, crossing it from east to west. Along with the MR7 and MR8 roads, it forms the "backbone of Swaziland's internal transport system." It connects the EN5 road in Mozambique near Namaacha at to the N17 road in South Africa at , near Ngwenya. The road passes through Hlane Royal National Park and through the capital of Mbabane, about 65 miles (110 km) further to the southwest. The highway descends into the Ezulwini Valley in four lanes. At Manzini, a bridge crosses the Mzimene River.