1927 in rail transport

January events

 * January 1 - John J. Bernet succeeds Frederick D. Underwood as president of the Erie Railroad.

February events

 * February 14 - The Hull Paragon rail accident in England kills 12 people,

April events

 * April 1 - Odawara Express Railway Line, connecting to Shinjuku Station of Tokyo and Odawara Station, via Machida Station route officially completed in Japan.(as predecessor of Odakyu Line)
 * April 3 - Yosan Line, Takamatsu to Matsuyama route officially completed in Shikoku Island, Japan.

May events

 * May 15 - The Grand Trunk Western Railroad introduces the Maple Leaf passenger train between Chicago, Illinois and Montreal, Quebec.

June events

 * June 1
 * Turkish State Railways formed.
 * Aichi Electronic Railway Line, Atsuta Jingu-mae Station of Nagoya to Toyohashi Station route officially completed in Aichi Prefecture, Japan.(as predecessor of Meitetsu Nagoya Line)
 * June 29 - Great Western Railway (England) takes delivery of its first 'King' Class 4-6-0 express passenger steam locomotive from its Swindon Works, No. 6000 King George V.

July events

 * July 6 – Hebikubo Station (蛇窪駅), later renamed as Togoshi-kōen Station, in Shinagawa, Tokyo, Japan, opens.
 * July 16 - Opening of Romney, Hythe and Dymchurch Railway on the English Channel coast (8.25 mi of 15 in gauge).

August events

 * August 24 - The Sevenoaks railway accident in England kills 13.
 * August 25 - Detroit and Mackinac Railway officially abandons the section from Au Sable River Jct. to Comins and the Curran Branch between Hardy and Beavers.

September events

 * September 1 – The Trunk Line in Norway takes electric traction into use between Oslo and Lillestrøm.
 * September 24 – October 15 – Baltimore and Ohio Railroad celebrates its centennial in the Fair of the Iron Horse in Baltimore, Maryland.
 * September 27 – The G

October events

 * October 10 - First Maine Central Railroad train over Carlton Bridge ends rail ferry service across the Kennebec River at Bath, Maine.

December events

 * December 3 - Official opening of London Post Office Railway.
 * December 30 - The Ginza Line, the oldest subway line in Asia, opens in Tokyo, Japan between Asakusa and Ueno.

Unknown date events

 * Rail transport in Cameroon extended to Yaoundé.
 * American Locomotive Company builds first 4-6-4 tender locomotive, for the New York Central; also, the first 4-8-4, for the Northern Pacific Railroad.
 * American Car and Foundry acquires Shippers Car Line.
 * Narrow gauge Sandy River and Rangeley Lakes Railroad ends train service to the Rangeley Lakes House destination hotel.
 * First Dutch National Railway Museum established.

May deaths

 * May 23 - Henry Huntington, nephew of Collis P. Huntington and executive in charge of Pacific Electric Railway in the early part of the 20th century (born 1850).

October deaths

 * October 7 – Godfrey M. Hyams, financier for Deepwater Railway and Tidewater Railway, dies (b. 1859).
 * October 16 – David Macpherson, Canadian-born American civil engineer (b. 1854)

November deaths

 * November 17 - Charles Sanger Mellen, president of Northern Pacific Railway 1897-1903 and New Haven Railroad beginning in 1903, dies (born 1852).