The Ontario station is a former train station located in Ontario, Oregon, United States that is listed on the National Register of Historic Places as the Oregon Short Line Railroad Depot.

[1] It was constructed in 1907 by the Union Pacific Railroad (UP) for its subsidiary, the Oregon Short Line Railroad (OSL), to replace an 1885 OSL depot that had been located just to the south and had been a simple wood-frame structure.

[2] The building is made of concrete block cast to imitate stone, and with red brick trim and other ornamental features.

[2] Amtrak (the National Railroad Passenger Corporation) began service to the station in 1977 with the Pioneer,[3] which originally provided service between Salt Lake City, Utah and Seattle, Washington, but was eventually extended further east and provided daily service from Chicago, Illinois to Seattle.

The next eastbound stop on the Pioneer was in Nampa, Idaho and the next westbound station was in Baker City, Oregon.