Japan National Route 423

National Route 423
国道423号
新御堂筋 (Shinmidō-suji)
National Route 423 highlighted in red
Route information
Length	50.6 km[1] (31.4 mi)
Existed	1982–present
Major junctions
South end	National Route 25 in Kita-ku, Osaka
Major intersections	National Route 1 National Route 479 National Route 171 Shin-Meishin Expressway National Route 372 / Kyoto Jūkan Expressway
North end	National Route 9 in Kameoka, Kyoto
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 422 → National Route 424

National Route 423 (国道423号, Kokudō Yonhyaku ni-jusangō) is a national highway of Japan connecting Kita-ku, Osaka and Kameoka, Kyoto in the Kansai region of Japan.