Union Railroad

• Union Railroad (Pittsburgh), 1889-present
• Union Railroad (Illinois), 1852–1881, an Illinois railroad, predecessor of the Michigan Central Railroad (New York Central system)
• Union Railroad of Baltimore (Maryland), 1866–1976, predecessor of the Pennsylvania Railroad
• Union Railroad (Massachusetts freight railway), 1848–1854, predecessor of the Boston and Albany Railroad (New York Central system)
• Union Freight Railroad, 1872–1970, part of the New York, New Haven and Hartford Railroad system in Boston, Massachusetts
• Union Railroad (Onondaga County, New York), 1856–1858, a New York railroad, predecessor of the Delaware, Lackawanna and Western Railroad
• Union Railroad (Rockland County, New York), 1851–1946, a New York railroad, predecessor of the Erie Railroad
• Union Railroad (Ohio), 1858–1860, an Ohio railroad, predecessor of the Baltimore and Ohio Railroad
• Union Railroad of Oregon, 1927–1993, an Oregon railroad
  • Union Railway (Oregon), 1890–1906, an Oregon railroad, predecessor of the above
• Union Railway (Chattanooga, Tennessee), 1883–1888, a Tennessee railroad, belt line
• Union Railway (Memphis, Tennessee), a Tennessee railroad, belt line

• Union Railway (Bronx) in New York City
• Union Railroad (Brooklyn) in New York City
• Union Railroad (Massachusetts street railway) in the Boston area; see North Cambridge Carhouse
• Union Railroad (Missouri), a streetcar in St. Louis
• Union Railway (Missouri) in St. Joseph, a Missouri railroad
• Union Railroad (Rhode Island) in Providence, a Rhode Island railroad
• Union Railroad (Washington), a streetcar in Washington, D.C.

The following railroads had Union Railroad or Union Railway in their names:

• Baltimore Coal and Union Railroad, part of the Delaware and Hudson Railroad system
• Chattanooga Union Railway, a Tennessee railroad
• Channel Tunnel Rail Link (High Speed 1), Kent, England
• Dayton and Union Railroad, Union City, Indiana, to Dodson, Ohio, an Ohio railroad
• Dayton Union Railway, Dayton, Ohio, an Ohio railroad
• Delaware River and Union Railroad, Marcus Hook, Pennsylvania, a Pennsylvania railroad
• Des Moines Union Railway, Des Moines, Iowa, an Iowa railroad
• Detroit Union Railroad Depot and Station Company, Detroit, Michigan, a Michigan railroad
• Fort Wayne Union Railway, Fort Wayne, Indiana, an Indiana railroad
• Fremont, Lima and Union Railway, Fremont, Ohio to Rushville, Indiana via Union City, Indiana
• Galena and Chicago Union Railroad, Chicago to Clinton, Iowa
• Indianapolis Union Railway, belt line around Indianapolis, Indiana
• Jacques Cartier Union Railway, a railway in Quebec, Canada
• Kentucky Union Railway, Lexington to Jackson, Kentucky, a Kentucky railroad
• Minneapolis Union Railway, Minneapolis, Minnesota, a Minnesota railroad
• Montana Union Railway, Butte to Garrison, Montana
• Northwestern Union Railroad, Milwaukee to Fond du Lac, Wisconsin; see Chicago and Milwaukee Railway
• Ogden Union Railway and Depot, Ogden, Utah; see Union Station
• Peoria and Pekin Union Railway, Pekin to Peoria, Illinois
• Rock River Valley Union Railroad, state line to Fond du Lac, Wisconsin, a Wisconsin railroad
• Spartanburg and Union Railroad, Alston to Spartanburg, South Carolina
• State Line and Union Railroad, Genoa, Illinois to Columbus, Wisconsin, a Wisconsin railroad
• Troy Union Railroad and Depot, Troy, New York, a New York Central Railroad precursor
• Tulsa-Sapulpa Union Railway, reporting mark: TSU
• Union Pacific Railroad, the largest railroad in the United States
• Union Railroad, Transfer and Stock Yard Company, an Indiana railroad
• Union Railway and Transit Company, St. Louis, Missouri, an Illinois railroad
• Western Union Railroad, Racine, Wisconsin, a Wisconsin railroad
• Wisconsin Union Railroad, Milwaukee, Wisconsin to Illinois state line, , a Wisconsin railroad

• Joint railway, a railway operating under the control of more than one railway company
• International Union of Railways
• American Railway Union
• Union Station (disambiguation)
• Etihad Railway, formerly known as United Arab Emirates Union Railway

• Railroad History Database
• "The Official Railway Equipment Register". LXXVII (3). New York: The Railway Equipment and Publication Company. January 1963: vi–x. {{cite journal}}: Cite journal requires |journal= (help)