Vadakku valliyur or Valliyur is a Special Grade Town Panchayat in Radhapuram taluk in Tirunelveli district in the Indian state of Tamil Nadu.Valliyur is one of the fastest-growing towns in Tirunelveli district. This town is located along NH 7. It gets its name from the goddess Valli, consort of Lord Murugan. The place connects the big city of Tirunelveli to the city of Nagercoil and town of Kanyakumari on NH 7.