The Jupiter (officially known as Central Pacific Railroad #60) was a 4-4-0 steam locomotive which made history as one of the two locomotives (the other being the Union Pacific No. 119) to meet at Promontory Summit during the Golden Spike ceremony commemorating the completion of the First Transcontinental Railroad.

The Jupiter was built in September 1868 by the Schenectady Locomotive Works of New York, along with three other engines, numbered 61, 62, and 63, named the Storm, Whirlwind, and Leviathan, respectively. These four engines were then dismantled and sailed to San Francisco, CA, where they were loaded onto a river barge and sent to the Central Pacific headquarters in Sacramento, then reassembled and commissioned into service on March 20, 1869.

The Jupiter was a wood burning locomotive. The distinctive conical chimney, known as a 'balloon stack', contained a spark arrestor.

This engine was scrapped in 1909, and a replica was built in 1979, 70 years after scrapping.