National Highway 6, commonly referred to as NH 6, is a primary national highway in India.

[1] The highway passes through the Indian states of Meghalaya, Assam, and Mizoram.

[2] Before renumbering of national highways NH-6 was variously numbered as old national highways 40, 44, 154 & 54.

[3] NH6 links Jorabat, Shillong, Jowai, Badarpur, Panchgram, Kolasib, Kawnpui, Aizawl, Seling, Lumtui, Khawthlir, Tuisen, Neihdawn, Champhai and terminates near Zokhawthar at India/Myanmar border.

[2][4] In sept 2008, a 120 meter long tunnel was built at Sonapur in Meghalaya inside the Narpuh Sanctuary northwest of Silchar, it connects Meghalaya with Assam's Barak Valley in Meghalaya's southeast.