Track gauges

GaugeCountryFirms / Operator / Company
381 mmEnglandRomney, Hythe and Dymchurch: Miniature railway carrying passengers.
457 mmEnglandCrewe works.
500 mmThe whole worldMilitary and industrial Railways.
520 mmSweden Industrial railway at Sandvikens Järnverk.
600 mmSweden, Wales, Namibia, the whole worldDecauville gauge. Military and industrial railways. The Festiniog Railway in Wales, among other places,  In Namibia after World War II was converted to 1067 mm.
610 mmIndia, the whole worldWidespread narrow gauge, industrial and military Railways.
650 mmMarocco 
686 mmBritish CommonwealthEqual to 2 feet 3 inches (English).
693 mmSwedenIndustrial Railway at Kvarnsvedens Pappersbruk.
700 mmThe whole worldMilitary and industrial Railways.
750 mmThe former USSR, Argentina, the whole world

In the USSR widespread narrow gauge system. Industrial and military railways. In Argentina, among other places, the Rio Turbio railway for ore transport. 
Waldenburgerbahn (Switzerland).

760 mmBosnia, Austria, India, Cuba,
Dubrovnik
Bosnian Narrow Gauge Railway. Widespread in the former Austro-Hungarian Empire.
762 mmIndia, South Africa, CubaIn South Africa converted to 1067 mm.
785 mmGermany The Rhein-Sieg-Railway (east of Bonn), was closed in 1967.
785 mmPoland, Eastern EuropeVarious small railways.
791 mmDenmarkFaxe Railway.
800 mmSwitzerland, Swedene.g. Wengernalpbahn.
802 mmSwedene.g. Bredsjö-Degerfors Railway.
838 mmBritish CommonwealthEqual to 2 feet 9 inches (English).
880 mmNorwayWorks railway at Sundland Torvstrofabrikk.
891 mmSwedenEqual to 3 foot (Swedish).
900 mmLinz, LisbonIndustrial Railways.
900 mm 

Germany 

In the public railways on the North Sea island of Borkum and between Bad Doberan and Baltic Sea resort of Kühlungsborn.
914 mm 


New Zealand, Isle of Man, USA, Kuba, ganze WeltGleich 3 Fuss (englisch). In den USA u.a. die Denver & Rio Grande Western. 

915 mmPeru 
925 mmGermanyChemnitz Tramways until 1988.
950 mmEritrea, ItalyStandard narrow gauge track width in Italy, which also once occupied Eritrea.
991 mmBritish CommonwealthEqual to 3 feet 3 Inches (English).
1000 mmSwitzerland, India, Africa, VietnamA track width, which has been used all over the world. Equal to 3 feet 3 3/8 inches (English).
1009 mmSofia 
1050 mmTurkey, Syria, Lebanon, Jordan, Saudi ArabiaAmong other places, the Mecca Railway destroyed by Lawrence of Arabia, south of Amman, Jordan.
1055 mmFrench Colonies 
1065 mmSouth AfricaAfter 1990, Spoornet (The South African Railway) standardised on this gauge instead of 1067 mm.
1067 mmSouth Africa, Japan, Norway, New Zealand, Indonesia, Australia (Queensland and W. Australia),
Tallinn in Estonia, RTM in Rotterdam
Kap-Spur.
1093 mmSwedenFor example, Nykoping Uttersberg Railway. The Surahammar-Lisjo works Railway.
1099 mmSweden 
1100 mmBelgiumThe Antwerp Ghent Railway until 1896, then rebuilt in standard gauge.
1100 mm

Germany

The tramways in Braunschweig, also the now closed routes in Kiel and Lübeck were built to this gauge. 
1101 mmSwedenFryckstad Clara Pixie Railway. Equal to 3 feet 8 1/2 inches (Swedish).
1106 mmAustriaThe Horse Tramway (today the Ceske Budejovice in the Czech Republic) - Linz (200 km long). Converted to standard gauge.
1188 mmSwedenEqual to 4 foot (Swedish).
1219 mmSwedenEqual to 4 foot (English).
1372 mmJapan and TokioIn Japan, including the trams in Tokyo and Hakodate.
1422 mmEnglandThe track gauge used at the beginning by George Stepgenson: 4 feet 8 Inches (English). He discovered that everything ran better after he made the gauge half an Inch wider. 
1431 mmSwedenThe Stockholm Underground was built to his gauge. Later extensions and conversions were done in Standard gauge. 
1432 mmEurope, JapanThe track gauge used at the beginning by George Stephenson: 4 feet 8 inches (English). He discovered that everything ran better after he made the gauge half an inch wider.
1435 mmThe whole world - with exceptionsThe standard gauge (equal to 4 feet 8 1/2-inches, English).
1440 mmBelgium, FranceConverted to Standard gauge.
1445 mmItalyFor Italian Trams, e.g. in Milan and Rome. 
1450 mmGermanyIt is the official gauge of Dresden Tramways. 
1458 mmGermanyIt is the official gauge of Leipzig Tramways.
1473 mmUSACamden & Amboy, NJ & Ohio, both converted to Standard gauge.
1524 mmUSSR, China, Finland, USA, PolandStandard in the USA southern states until 1886. The first transcontinental railway line (Union Pacific/Western Pacific) was to have been built with this gauge. It was decided, however, before work started to choose standard gauge. Converted to standard gauge in Poland in 1918.
1581 und
1588 mm
USA 

Used on the tram and subway in Philadelphia (Pennsylvania).
1587 mmUSAThe track gauge of the tramways in Pittsburgh (Pennsylvania).
1600 mm

Ireland, Australia (South Australia, Victoria)
Baden (then still without Württemberg).

“Irish" track.

Opened in Baden (Baden Main Railway) but within one year (1854/55) was converted into standard gauge.

1672 mmSpainLater converted to 1676 mm.
1676 mmSpain, India, Canada, PortugalIn Canada (and a line across the border to Portland, Maine, USA) until 1870, then converted to standard gauge. Equal to 5 feet 6 inches (English).
1814 mmRussia, USAIn Russia converted to 1524 mm. In the USA (New York to St. Louis, Erie and others) 1865 - 1871, then converted to standard gauge.
1829 mmUSAConverted to Standard gauge. 
1940 mmNetherlands
3000 mmGermany Planned by Hitler's Third Reich during the Second World War as a super highway with two-storey locomotives and wagons. First line was to be from Berlin to Munich. Construction never got started.
2134 mmEnglandGreat Western Railway (or God's Wonderful Railway - as it was also called!) Retained until 1892, but was then converted to standard gauge.