National Route 13 () is a highway in southern Vietnam stretching from the northeastern outskirts of Ho Chi Minh City, the commercial centre and most populous region of the country, to the Hoa Lu border gate, the Vietnam-Cambodia border. The highway starts around Thủ ÃÂức on the northern outskirts of Ho Chi Minh City, once the site of the military academy of the Army of the Republic of Vietnam, and travels north through the provinces of Bình Dðáng and Bình Phðá»Âc. The highway passes through the provincial cities of ThuáºÂn An, Thủ Dầu Má»Ât; towns of Bến Cát, Chán Thành, Bình Long; and districts of ÃÂá»Âng Phú, Há»Ân Quản, Lá»Âc Ninh.
During the Vietnam War the road was nicknamed Thunder Road by US forces.