In operation at 762 mm (2 ft 6 in)

• Anbō Forest Railway [jp] (operational status unknown)
• DisneySea Electric Railway (located in Tokyo DisneySea)
• Historical Village of Hokkaido [jp]
• Kurobe Gorge Railway
• Kurobe Senyō Railway (private)
• Sangi Railway Hokusei Line
• Western River Railroad (located in Tokyo Disneyland) (separate 914 mm (3 ft) gauge railway named Jolly Trolley previously present)
• Yokkaichi Asunarou Railway Hachiōji Line
• Yokkaichi Asunarou Railway Utsube Line

Defunct or converted

• Hidaka Takushoku Railway (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Jōshin Dentetsu Jōshin Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Kabe Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Kintetsu Yunoyama Line (converted to 1,435 mm (4 ft 8+1⁄2 in) gauge) (operating)
• Kiso Forest Railway (defunct)
• Kurama-dera Cable (converted to 800 mm (2 ft 7+1⁄2 in) gauge) (operating)
• Kurihara Den'en Railway Line (converted to 1,067 mm (3 ft 6 in) gauge) (defunct)
• Kururi Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Nagareyama Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Ōigawa Railway Ikawa Line (dual gauge lines with 1,067 mm (3 ft 6 in) gauge track previously present) (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Okinawa Prefectural Railways (converted to 1,067 mm (3 ft 6 in) gauge) (defunct)
• Ryūgasaki Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Sakagawa Line (defunct)
• Tobu Kinugawa Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Tōbu Yaita Line (converted to 1,067 mm (3 ft 6 in) gauge) (defunct)
• Tomakomai Light Railway (converted to 1,067 mm (3 ft 6 in) gauge) (operating)
• Uchiko Line (converted to 1,067 mm (3 ft 6 in) gauge) (operating)

Influence in former colonies

Taiwan:

• Alishan Forest Railway
• Taiwan Sugar Railways
• TRA Taitung line before 1982^[1]