Various 750 mm (2 ft 5+1⁄2 in) gauge railways operate in Ukraine as common carrier, industrial railway or children's railways.

750 mm (2 ft 5+1⁄2 in) gauge common carrier

Lines in Carpathian Ukraine ^[1]

• Berehove region network, around 200 km, initially built during the Austro-Hungarian Empire at the gauge of 760 mm (2 ft 5+15⁄16 in) and regauged to 750 mm (2 ft 5+1⁄2 in) when Ukraine became part of the Soviet Union
• Uzhhorod region, 35 km, built at the gauge of 760 mm (2 ft 5+15⁄16 in) and regauged to 750 mm (2 ft 5+1⁄2 in).

Antonivka-Zarichne system in West Ukraine

• Built around 1900 at the gauge of 750 mm (2 ft 5+1⁄2 in) ^[2]

Central Ukraine ^[3]

• Haivoron network, built around 1900 at the gauge of 750 mm (2 ft 5+1⁄2 in), 703 km.^[4]
• Novopoltavka railways
• Vapniarka railways, 140 km, built at the 600 mm (1 ft 11+5⁄8 in) gauge by Germany, later regauged to 750 mm (2 ft 5+1⁄2 in)

750 mm (2 ft 5+1⁄2 in) gauge industry, agricultural and forest railways

Industrial, peat, sugar and forestry lines ^[5]

• Mykhailivka sugar railway, 1932–1990.
• Okhtyrka sugar railway, 56 km, 1940–1999.
• Potash industrial lines, 49 km, 1933–2003.
• Smyha peat railways
• Teresva forestry railway, 138 km, built at the gauge of 750 mm (2 ft 5+1⁄2 in) and regauged to 760 mm (2 ft 5+15⁄16 in) (Between the two World Wars the region was a part of Czechoslovakia) and back to 750 mm (2 ft 5+1⁄2 in).
• Vyhoda system, 180 km of forest railways

750 mm (2 ft 5+1⁄2 in) pioneer railways

Ten pioneer or children's railways exist in various cities.^[6]

• Dnipro pioneer railway, 2 km in the Lazar Hloba Park in Dnipro, opened in 1936.
• Donetsk pioneer railway, 2 km in the Central Scherbakov Park of Culture and Leisure in Donetsk, opened in 1972.
• Yevpatoria pioneer railway near Yevpatoria on the Crimea Peninsula, opened around 1990, abandoned.
• Kharkiv pioneer railway, 4 km in the northern part of Kharkiv, opened in 1940.
• Kyiv pioneer railway, 3 km in the Syretskyi Park in Kyiv, opened in 1953.
• Lutsk pioneer railway in Lutsk, built 1952–1954.
• Lviv pioneer railway, 1,9 km in the Stryiskyi Park in Lviv
• Uzhhorod pioneer railway on the bank of the River Uzh in Uzhhorod, opened in 1947.
• Rivne pioneer railway, 2 km, in Rivne, opened in 1949.
• Zaporizhia pioneer railway, 9 km, between the main railway station of Zaporizhia and the River Dnipro, opened in 1972.