List of Connecticut railroads

The following railroads operate in the U.S. state of Connecticut.

Common freight carriers

• Branford Steam Railroad (BRFD) (Tilcon Connecticut)
• Central New England Railroad (CNZR)
• Connecticut Southern Railroad (CSO) (Genesee and Wyoming)
• CSX Transportation (CSXT)
• Housatonic Railroad (HRRC)
• Naugatuck Railroad (NAUG)
• New England Central Railroad (NECR) (Genesee and Wyoming)
• Pan Am Railways (PAR)
• Pan Am Southern Railroad (PAS) (Operated by Pan Am Railways)
• Providence and Worcester Railroad (PW) (Genesee and Wyoming)

Private Freight Carriers

• RED Technologies

Passenger carriers

• Amtrak (AMTK)
• Connecticut Trolley Museum
• Danbury Railway Museum
• Metro-North Railroad (MNCW)
• Naugatuck Railroad (Railroad Museum of New England)
• Hartford Line
• Shore Line East
• Shore Line Trolley Museum
• Valley Railroad (VALE)

Defunct railroads

Name	Mark	System[nb 1]	From	To	Successor	Notes
Boston, Hartford and Erie Railroad		NH	1863	1874	New York and New England Railroad
Boston and Maine Corporation	BM		1983			Still exists as a lessor of Pan Am Railways operating subsidiary Springfield Terminal Railway
Boston and New York Air-Line Railroad		NH	1875	1907	New York, New Haven and Hartford Railroad
Boston and New York Central Railroad		NH	1853	1858	Midland Railroad
Boston, Norwich and New London Railroad		NH	1832	1836	Norwich and Worcester Railroad
Branch Company		NH	1845	1850	Hartford and New Haven Railroad
Central New England Railway	CNE	NH	1899	1927	New York, New Haven and Hartford Railroad
Central New England and Western Railroad	NH		1889	1892	Philadelphia, Reading and New England Railroad
Central Vermont Railroad		CN	1873	1899	Central Vermont Railway
Central Vermont Railway	CV	CN	1899	1995	New England Central Railroad
Colchester Railroad		NH	1876	1907	New York, New Haven and Hartford Railroad
Connecticut Central Railroad	CCCL		1987	1998	Providence and Worcester Railroad
Connecticut Central Railroad		NH	1871	1887	New York and New England Railroad
Connecticut Rail Systems, Inc.	CTRA		1993	1993	Providence and Worcester Railroad
Connecticut Valley Railroad		NH	1868	1880	Hartford and Connecticut Valley Railroad
Connecticut Western Railroad		NH	1868	1881	Hartford and Connecticut Western Railroad
Consolidated Rail Corporation	CR		1976	1999	CSX Transportation
Danbury and Norwalk Railroad		NH	1850	1907	New York, New Haven and Hartford Railroad
Danbury Terminal Railroad	DTRR		1993	1996	Housatonic Railroad
East Granby and Suffield Railroad		NH	1901	1908	Central New England Railway
East Thompson Railroad		NH	1853	1858	Boston and New York Central Railroad
Fairfield County Railroad		NH	1835	1850	Danbury and Norwalk Railroad
Farmington Valley Railroad		NH	1852	1862	New Haven and Northampton Company
Hartford and Connecticut Valley Railroad		NH	1879	1892	New York, New Haven and Hartford Railroad
Hartford and Connecticut Western Railroad		NH	1881	1947	New York, New Haven and Hartford Railroad
Hartford and New Haven Railroad		NH	1833	1872	New York, New Haven and Hartford Railroad
Hartford and Providence Railroad		NH	1847	1849	Hartford, Providence and Fishkill Railroad
Hartford, Providence and Fishkill Railroad		NH	1849	1879	New York and New England Railroad
Hartford and Springfield Railroad		NH	1835	1847	Hartford and New Haven Railroad
Housatonic Railroad		NH	1836	1898	New York, New Haven and Hartford Railroad
Manchester Railroad		NH	1833	1847	Hartford and Providence Railroad
Manufacturers' Railroad		NH	1897	1907	New York, New Haven and Hartford Railroad
Manufacturers' Street Railway		NH	1893	1897	Manufacturers' Railroad
Meriden and Cromwell Railroad		NH	1882	1888	Meriden, Waterbury and Connecticut River Railroad
Meriden and Waterbury Railroad		NH	1887	1888	Meriden, Waterbury and Connecticut River Railroad
Meriden, Waterbury and Connecticut River Railroad		NH	1888	1896	Middletown, Meriden and Waterbury Railroad
Middletown Railroad		NH	1844	1850	Hartford and New Haven Railroad
Middletown Extension Railroad		NH	1857	1861	Hartford and New Haven Railroad
Middletown, Meriden and Waterbury Railroad		NH	1897	1907	New York, New Haven and Hartford Railroad
Midland Railroad		NH	1858	1862	Midland Land Damage Company
Midland Land Damage Company		NH	1861	1863	Southern Midland Railroad
Naugatuck Railroad		NH	1845	1906	New York, New Haven and Hartford Railroad
New Britain and Middletown Railroad		NH	1852	1868	Hartford and New Haven Railroad
New Canaan Railroad		NH	1866	1883	Stamford and New Canaan Railroad
New England Railroad		NH	1895	1908	New York, New Haven and Hartford Railroad
New Haven and Derby Railroad		NH	1864	1907	New York, New Haven and Hartford Railroad
New Haven, Middletown and Willimantic Railroad		NH	1867	1875	Boston and New York Air-Line Railroad
New Haven and New London Railroad		NH	1848	1865	Shore Line Railway
New Haven, New London and Stonington Railroad		NH	1858	1864	New York, Providence and Boston Railroad
New Haven and Northampton Company		NH	1846	1910	New York, New Haven and Hartford Railroad
New London Northern Railroad		CN	1859	1951	Central Vermont Railway
New London and Stonington Railroad		NH	1852	1864	New York, Providence and Boston Railroad
New London, Willimantic and Palmer Railroad		CN	1849	1861	New London Northern Railroad
New London, Willimantic and Springfield Railroad		CN	1847	1849	New London, Willimantic and Palmer Railroad
New York and Boston Railroad		NH	1846	1865	Boston, Hartford and Erie Railroad
New York and Hartford Railroad		NH	1845	1849	Hartford, Providence and Fishkill Railroad
New York, Housatonic and Northern Railroad		NH	1864	1882	Housatonic Railroad
New York and New England Railroad		NH	1873	1895	New England Railroad
New York and New Haven Railroad		NH	1844	1872	New York, New Haven and Hartford Railroad
New York, New Haven and Hartford Railroad	NH	NH	1872	1969	Penn Central Transportation Company
New York, Providence and Boston Railroad		NH	1833	1893	New York, New Haven and Hartford Railroad
New York and Stonington Railroad		NH	1832	1833	New York, Providence and Boston Railroad
Norwich and Worcester Railroad		NH	1836	1976	Consolidated Rail Corporation
Penn Central Transportation Company	PC		1969	1976	Consolidated Rail Corporation
Philadelphia, Reading and New England Railroad		NH	1892	1899	Central New England Railway
Rockville Railroad		NH	1863	1907	New York, New Haven and Hartford Railroad
Rockville Branch Railroad		NH	1857	1863	New York, New Haven and Hartford Railroad
Shepaug Railroad		NH	1873	1887	Shepaug, Litchfield and Northern Railroad
Shepaug, Litchfield and Northern Railroad		NH	1887	1898	New York, New Haven and Hartford Railroad
Shepaug Valley Railroad		NH	1866	1873	Shepaug Railroad
Shore Line Railway		NH	1864	1897	New York, New Haven and Hartford Railroad
South Manchester Railroad		NH	1866	1976	Consolidated Rail Corporation
Southbridge and Blackstone Railroad		NH	1849	1853	Boston and New York Central Railroad
Southern Midland Railroad		NH	1863	1863	Boston, Hartford and Erie Railroad
Stamford and New Canaan Railroad		NH	1882	1890	New York, New Haven and Hartford Railroad
Thompson and Willimantic Railroad		NH	1857	1863	Boston, Hartford and Erie Railroad
Vermont Central Railroad		CN	1871	1873	Central Vermont Railroad
Watertown and Waterbury Railroad		NH	1869	1893	Naugatuck Railroad
Windsor Locks and Suffield Railroad		NH	1868	1871	Hartford and New Haven Railroad

Electric

• Connecticut Company
• Consolidated Railway
• Shore Line Electric Railway
• Farmington Street Railway
• Hartford and West Hartford Horse Railroad
• Meriden, Southington and Compounce Tramway Company
• Stafford Springs Street Railway
• Torrington and Winchester Street Railway

Not completed

• New York and Boston Rapid Transit Company

Notes

1. This is one or more of the Class I railroads that the railroad became part of, if any.