Snake River Correctional Institution (SRCI) is a medium security prison in the western United States in eastern Oregon.

The largest facility in the Oregon Department of Corrections system, it is located in unincorporated northeastern Malheur County,[1] about five miles (8 km) northwest of central Ontario, which is near the Snake River.

The state's prison siting committee selected the Ontario site in October 1989 for a medium security prison that could house up to 3,000 inmates, which Governor Neil Goldschmidt approved later in the month.

In 1994, the Oregon Legislature approved a $175 million expansion; built by Hoffman Construction, it was completed in 1998.

[6] Among the prison industries housed at Snake River are a commercial call center,[7] a metal shop that manufactures road signs for the state, and a building trades program that manufactures small modular structures such as comfort stations and gatehouses for the state parks.