National Route 148
国道148号
Route information
Length	69.9 km[1] (43.4 mi)
Existed	1953–present
Major junctions
North end	National Route 8 in Itoigawa, Niigata
South end	National Route 147 in Ōmachi, Nagano
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 147 → National Route 149

National Route 148 is a national highway of Japan connecting Ōmachi, Nagano and Itoigawa, Niigata in Japan, with a total length of 69.9 km (43.43 mi).