Olex is an unincorporated community in Gilliam County, Oregon, United States, at an elevation of 1,020 feet (310 m). It is located on Oregon State Route 19 about halfway between Condon and Arlington, at the bottom of the Rock Creek Grade.
Olex was named for Alex Smith, a local resident; the name was misspelled in transmission. The Olex post office operated from 1874 to 1976. Olex is the birthplace of Oregon politician Earl Snell.
Coordinates: 45°29′49″N 120°10′08″W / 45.4970745°N 120.1689270°W