National Route 17
国道17号
Japan National Route 17 highlighted in red
Route information
Length	350.3 km[1] (217.7 mi)
Existed	4 December 1952–present
Major junctions
Major intersections	National Route 7 / National Route 8 / National Route 49 / National Route 113 / National Route 116 in Chūō-ku, Niigata
South end	National Route 1 / National Route 4 / National Route 6 / National Route 14 / National Route 15 / National Route 20 in Nihonbashi, Chūō, Tokyo
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 16 → National Route 18

National Route 17 (国道17号, Kokudō Jū-nana-gō) is a highway on the island of Honshu in Japan. It originates at Nihonbashi in Chūō, Tokyo, and terminates in the city of Niigata (the capital of Niigata Prefecture), where it meets National Routes 7, 8, 49, 113 and 116).^[2]

National Route 17 measures 350.3 km in length. It incorporates parts of two ancient highways, the Nakasendō and Mikuni Kaidō. The newer Kan-Etsu Expressway parallels National Route 17.

In addition to Chūō, National Route 17 passes through Itabashi. It links the prefectural capitals of Saitama (Saitama Prefecture) and Maebashi (Gunma Prefecture).

• Length: 351.1 km (217.7 mi)
• Origin: Nihonbashi, Chūō, Tokyo (originates at junction with Routes 1, 4, 6, 14, 15 and 20)
• Terminus: Chuo-ku, Niigata (ends at Junction with Routes 7, 8, 49, 113 and 116)
• Major cities: Saitama, Kumagaya, Takasaki, Maebashi, Shibukawa, Numata, Minami-Uonuma, Nagaoka, Sanjo

• 4 December 1952: First Class National Highway 17 (Tokyo to Niigata)
• 1 April 1965: General National Highway 17 (Tokyo to Niigata)

• 
  Route 17 intersects with the C2 Central Circular Route of the Shuto Expressway near Nishi-Sugamo Station
• 
  Shin-Omiya bypass in Saitama City
• 
  Route 17 in Maebashi, Gunma Prefecture
• 
  Route 17 in Yuzawa, Niigata Prefecture

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