|Missouri Pacific Railroad|
|Locale||Arkansas, Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri, Nebraska, Oklahoma, and Texas|
|Dates of operation||1872–1982|
|Successor||Union Pacific Railroad|
|Track gauge||4 ft 8 1⁄2 in (1,435 mm) standard gauge|
|Headquarters||St. Louis, Missouri|
Missouri Pacific Locomotive #152
The Missouri Pacific Railroad (reporting mark MP), often shortened to MoPac and called The Mop, was one of the first railroads in the United States west of the Mississippi River.
Union Pacific Corporation, the parent company of the Union Pacific Railroad, agreed to buy the Missouri Pacific Railroad on January 8, 1980.