Oregon Railroad and Navigation Company
| OR&N 197 at Oregon Rail Heritage Center | |
| Company type | Subsidiary of the Union Pacific Railroad | 
|---|---|
| Industry | Railroad and Shipping | 
| Founded | 1879 (Origins trace back to 1860) | 
| Defunct | 1910 (O.R. & N) 1936 (O.W.R. & N) | 
| Successor | Oregon-Washington Railroad and Navigation Company Union Pacific Railroad | 
| Headquarters | United States | 
| Area served | United States | 
| Key people | Henry Villard | 
| Parent | Union Pacific Railroad Company | 
The Oregon Railroad and Navigation Company (OR&N) was a rail and steamboat transport company that operated a rail network of 1,143 miles (1,839 km) running east from Portland, Oregon, United States, to northeastern Oregon, northeastern Washington, and northern Idaho. It operated from 1896 as a consolidation of several smaller railroads.
OR&N was initially operated as an independent carrier, but Union Pacific (UP) purchased a majority stake in the line in 1898. It became a subsidiary of UP titled the Oregon–Washington Railroad and Navigation Company in 1910. In 1936, Union Pacific formally absorbed the system, which became UP's gateway to the Pacific Northwest.