The Central Branch Union Pacific Railroad was a railroad in the U.S. state of Kansas. Originally planned as a line from Atchison west into Colorado, and given federal land grants by the Pacific Railway Act of 1862 as one of the branches of the Union Pacific Railroad, it was left with a hanging end at Waterville, Kansas when the Union Pacific Railway, Eastern Division, with which it was to connect, changed its route. The line was acquired by the Union Pacific through a stock purchase by Jay Gould and leased to the Missouri Pacific Railroad in 1880. In 1909 the Central Branch was merged into the Missouri Pacific; the latter company came back into the Union Pacific system in 1982. In 1991 the remaining trackage west of Frankfort was leased to the Kyle Railroad.