Miami Valley Railroad

Cincinnati, Lebanon and Northern Railway

CL&N (red) and other Pennsylvania Railroad lines (black)
Locale	Miami Valley, Ohio
Dates of operation	1881–1921
Successor	Pennsylvania Railroad
Track gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Previous gauge	originally 3 ft (914 mm)
Headquarters	Cincinnati

The Cincinnati, Lebanon and Northern Railway (CL&N) was a local passenger and freight-carrying railroad in the southwestern part of the U.S. state of Ohio, connecting Cincinnati to Dayton via Lebanon. It was built in the late 19th century to give the town of Lebanon and Warren County better transportation facilities. The railroad was locally known as the "Highland Route", since it followed the ridge between the Little and Great Miami rivers, and was the only line not affected by floods such as the Great Dayton Flood of 1913.

The company went through multiple bankruptcies, both before and after its 1881 completion, until the Pennsylvania Railroad gained control in 1896 and leased it in 1921. Except for several years in the mid-1880s, when the line was under control of the 3 ft (914 mm) narrow gauge Toledo, Cincinnati and St. Louis Railroad, it was not a major line, in part due to its steep approach to downtown Cincinnati. For this reason, portions of the line have been abandoned, beginning in 1952 with a segment north of Lebanon.

Passenger service was eliminated entirely in 1934. Conrail, the Pennsylvania Railroad's successor, sold the remaining trackage in the 1980s to the Indiana and Ohio Railway, a short line now owned by RailAmerica. That company continues to provide local freight service on the ex-CL&N, and the Lebanon Mason Monroe Railroad operates tourist trains on a portion of the line near Lebanon.