National Route 8 is an east-west highway in Hà Tĩnh Province in North Central of Vietnam, which is managed and maintained by the central government.

The 85.3 km-long segment from Hồng Lĩnh Township across Đức Thọ and Hương Sơn districts is called National Route 8A.

The 25 km-long segment from Hồng Lĩnh Town eastward and reach Xuân Hải Port is called National Route 8B.

In 2017, National Route 8C was designated from Thien Cam to Thanh Chuong along portions of provincial roads 551, 554, 550, and portions of National Routes 15, 8 and 8B.

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