Olentangy West is a neighborhood approximately 5 miles northwest of downtown Columbus, Ohio, United States. Also called West Olentangy, it is generally bordered by West Henderson Road on the north, the Olentangy River and Clintonville on the east, Kinnear Road on the south, and Upper Arlington on the west. The area is primarily residential, although the large Riverside Methodist Hospital and the headquarters for Chemical Abstracts Service are located within its boundaries.