1966 in rail transport

• January – GM introduces the EMD SD40.
• January – GE introduces the GE U28B.
• January 3 – British Rail begins full electric passenger services over the West Coast Main Line from Euston to Manchester and Liverpool with 100 mph (160 km/h) operation from London to Rugby. Services officially inaugurated April 18.{{cite book|last=Nock|first=O. S.|authorlink=Oswald Nock|year=1965|title=Britain's New Railway: Electrification of the London-Midland main lines from Euston to Birmingham, Stoke-on-Trent, Crewe, Liverpool and Manchester|location=Shepperton|publisher=Ian Allan Publishing|oclc=59003738}}

• March 7 – The Western Region of British Railways closes the former Somerset & Dorset Joint Railway.{{cite book|first=Robin|last=Atthill|year=1967|title=The Somerset & Dorset Railway|location=Newton Abbot|publisher=David & Charles|isbn=0-7153-4312-2}}
• March 25 – Hachinohe Rinkai Railway Line was opened.

• April 20 – The second segment, between Predeal and Câmpina, of Căile Ferate Române's (in Romania) electrification is completed.

• May 28 - Historic Red Clay Valley Incorporated begins operating steam tourist trains on the 10.2-mile Landenberg Branch of the Baltimore and Ohio Railroad. The tracks were constructed in 1871-2 by the Wilmington & Western Railroad. The operation is the 7th oldest standard gauge tourist heritage railroad operating in the US.{{cite web|title=Wilmington & Western Railroad|publisher=WWRR|url=http://www.wwrr.com}}

• 15 July – The London Midland Region of British Railways allows West Indian-born Asquith Xavier to transfer as a guard from London Marylebone to Euston, overturning the opposition of National Union of Railwaymen members of the local staff committee.{{cite news|url=http://news.bbc.co.uk/onthisday/hi/dates/stories/july/15/newsid_3043000/3043439.stm|title=Euston staff 'colour bar' ended|accessdate=2016-10-26|date=1966-07-15|work=On This Day|publisher=BBC News|archiveurl=https://web.archive.org/web/20080307123432/http://news.bbc.co.uk/onthisday/hi/dates/stories/july/15/newsid_3043000/3043439.stm|archivedate=2008-03-07|url-status=live}}Oona King, [http://www.bbc.co.uk/programmes/b07zzr8r "Asquith's Fight for Equality"], BBC Radio 4, 2016-10-26.
• July 17 – The first passenger operations begin at the Illinois Railway Museum using car number 415.{{cite web|author=Illinois Railway Museum|date=2005-05-05|url=http://www.irm.org/history/history.html|archive-url=https://web.archive.org/web/19980429091509/http://irm.org/history/history.html|url-status=dead|archive-date=1998-04-29|title=History of the IRM|accessdate=2005-11-07}}

• September 3 – The London Midland Region of British Railways closes the former Great Central Railway London Extension to passenger traffic between Aylesbury and Rugby Central, bringing an end to its career as "the last main line".{{cite web|url=http://www.railwayarchive.org.uk/|title=Railway Archive|accessdate=July 31, 2007| archiveurl= https://web.archive.org/web/20070804182008/http://www.railwayarchive.org.uk/| archivedate=August 4, 2007 | url-status= live}}

• October 14 – Montreal Metro inaugurated.

• December – GE introduces the GE U30B.

• ALCO introduces the ALCO Century 415.
• The Chicago, Burlington & Quincy Railroad removes from service and donates the General Pershing Zephyr power car to the National Museum of Transport in St Louis, Missouri.
• Beyer, Peacock & Company of Manchester, England, turns out its last locomotives, British Rail Class 25/3 diesels.{{cite book|last=Hills|first=R. L.|author2=Patrick, D.|title=Beyer, Peacock, locomotive builders to the world|location=Glossop|publisher=Venture Publications|year=1982|isbn=1-898432-05-8}}
• Norris Roy Crump returns to the presidency of Canadian Pacific for a short period, succeeding Robert Emerson. Crump, in turn, is succeeded by Ian David Sinclair.

{{1966 railway accidents|state=uncollapsed}}

{{main|births in 1966}}

{{Further|Category:1966 births}}

• Martin W. Clement, president of the Pennsylvania Railroad 1935–1948 (b. 1881).{{cite web|author=President and Fellows of Harvard College|year=2004|url=http://www.hbs.edu/leadership/database/leaders/154/|title=20th century great American business leaders – Martin W. Clement|accessdate=February 23, 2005|archiveurl=https://web.archive.org/web/20050205121925/http://www.hbs.edu/leadership/database/leaders/154/|archivedate=February 5, 2005|url-status=dead|df=mdy-all}}

• White, John H., Jr. (Spring 1986), America's most noteworthy railroaders, Railroad History, Railway and Locomotive Historical Society, 154, p. 9–15.