The Coaster was a passenger train of the Southern Pacific on its coast route between Los Angeles and San Francisco, California.
Service began on December 6, 1901, as daylight coach trains number 1 and 2 called the Coast Line Limited.
Service resumed when sleeping cars were added to trains renumbered 69 and 70 in April, 1926, and briefly renamed the Oceanshore Express.
The name Coaster was again used from September 25, 1927, until the older equipment was replaced with lightweight chair cars running as Starlight trains 94 and 95 on October 2, 1949.
Diesel locomotives pulled the Starlight from January 10, 1955, until it was consolidated with the Lark on July 15, 1957.