| Boston, Hartford and Erie Railroad | | NH | 1865 | 1874 | New York and New England Railroad |
| Boston and Providence Railroad | | NH | 1853 | 1972 | Penn Central Transportation Company |
| Boston and Providence Railroad and Transportation Company | | NH | 1834 | 1853 | Boston and Providence Railroad |
| Consolidated Rail Corporation | CR | | 1976 | 1982 | Providence and Worcester Railroad |
| Fall River, Warren and Providence Railroad | | NH | 1862 | 1892 | Old Colony Railroad |
| Hartford, Providence and Fishkill Railroad | | NH | 1849 | 1879 | New York and New England Railroad |
| Moshassuck Valley Railroad | MOV | | 1874 | 1981 | Providence and Worcester Railroad |
| Narragansett Pier Railroad | NAP | NH | 1868 | 1981 | N/A |
| New England Railroad | | NH | 1895 | 1908 | New York, New Haven and Hartford Railroad |
| New York and Boston Railroad | | NH | 1853 | 1865 | Boston, Hartford and Erie Railroad |
| New York and New England Railroad | | NH | 1873 | 1895 | New England Railroad |
| New York, New Haven and Hartford Railroad | NH | NH | 1893 | 1969 | Penn Central Transportation Company |
| New York, Providence and Boston Railroad | | NH | 1832 | 1893 | New York, New Haven and Hartford Railroad |
| New York, Providence and Boston and Old Colony Railroad Terminal Company | | NH | 1891 | 1904 | Providence Terminal Company |
| Newport and Fall River Railroad | | NH | 1846 | 1863 | Old Colony and Newport Railway |
| Newport and Wickford Railroad and Steamboat Company | | NH | 1870 | 1909 | New York, New Haven and Hartford Railroad |
| Old Colony Railroad | | NH | 1872 | 1947 | New York, New Haven and Hartford Railroad |
| Old Colony and Newport Railway | | NH | 1863 | 1872 | Old Colony Railroad |
| Pawtuxet Valley Railroad | | NH | 1868 | 1907 | New York, New Haven and Hartford Railroad |
| Penn Central Transportation Company | PC | | 1969 | 1976 | Consolidated Rail Corporation |
| Pontiac Branch Railroad | | NH | 1875 | 1885 | New York, Providence and Boston Railroad |
| Providence and Bristol Railroad | | NH | 1850 | 1852 | Providence, Warren and Bristol Railroad |
| Providence and Plainfield Railroad | | NH | 1846 | 1851 | Hartford, Providence and Fishkill Railroad |
| Providence and Springfield Railroad | | NH | 1872 | 1905 | New York, New Haven and Hartford Railroad |
| Providence Terminal Company | | NH | 1904 | 1906 | New York, New Haven and Hartford Railroad |
| Providence, Warren and Bristol Railroad | | NH | 1852 | 1947 | New York, New Haven and Hartford Railroad |
| Rhode Island Company | | NH | 1902 | 1919 | United Electric Railways | Primary an electric railway company; leased the Narragansett Pier Railroad from 1911 to 1918 |
| Rhode Island Central Railroad | | NH | 1879 | 1880 | New York, Providence and Boston Railroad |
| Rhode Island and Massachusetts Railroad | | NH | 1872 | 1907 | New York, New Haven and Hartford Railroad |
| Rhode Island Mining Railroad | | NH | 1865 | 1872 | Rhode Island and Massachusetts Railroad |
| Seekonk Branch Railroad | | NH | 1836 | 1839 | Boston and Providence Railroad | Was located in what was part of Massachusetts before the boundary was moved in 1862 |
| Warren and Fall River Railroad | | NH | 1856 | 1862 | Fall River, Warren and Providence Railroad |
| Warwick Railroad | | NH | 1873 | 1880 | New York, Providence and Boston Railroad |
| Warwick Railway | WRWK | | 1949 | 1984 | Providence and Worcester Railroad | Electric until 1952 |
| Wickford Railroad | | NH | 1864 | 1870 | Newport and Wickford Railroad and Steamboat Company |
| Wood River Branch Railroad | | NH | 1872 | 1947 | N/A |
| Woonasquatucket Railroad | | NH | 1857 | 1872 | Providence and Springfield Railroad |
| Woonsocket and Pascoag Railroad | | NH | 1887 | 1907 | New York, New Haven and Hartford Railroad |
| Woonsocket Union Railroad | | NH | 1850 | 1853 | New York and Boston Railroad |
