Buntun Bridge (Itawit: Talletay ta Buntun; Ilocano: Rangtáy ti Buntun; Filipino: Tulay ng Buntun) is a river bridge that stretches from Tuguegarao City to Solana in Cagayan and spans the Cagayan River, the largest river basin in the Philippines. It is the second longest bridge in the country, after San Juanico Bridge, and forms part of the Santiago-Tuguegarao Road (designated as N51 by the Department of Public Works and Highways highway routing system), a major junction of the Pan-Philippine Highway.