National Route 255
国道255号
Route information
Length	20.3 km[1] (12.6 mi)
Major junctions
North end	National Route 246 in Hadano, Kanagawa
Major intersections	Tōmei Expressway National Route 271 (Odawara-Atsugi Road)
South end	National Route 1 in Odawara, Kanagawa
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 254 → National Route 256

National Route 255 is a national highway of Japan connecting Hadano, Kanagawa and Odawara, Kanagawa in Japan, with a total length of 20.3 km (12.61 mi).