U.S. Route 197 (US 197) is a north–south United States Highway, of which all but 2.76 miles of its 69.93 miles are within the state of Oregon. The highway starts in rural Wasco County in Central Oregon at an intersection with US 97. US 197 travels north as a continuation of The Dalles-California Highway No. 4 through the cities of Maupin, Tygh Valley, and Dufur to The Dalles. Within The Dalles, the highway becomes concurrent with US 30 and intersects Interstate 84 (I-84) before it crosses over the Columbia River on The Dalles Bridge into Washington. The highway continues through the neighboring city of Dallesport in Klickitat County and terminates at a junction with State Route 14 (SR 14).

The Dalles, formally the City of The Dalles and also called Dalles City, is an inland port and the largest city in Wasco County, Oregon, United States. The population was 16,010 at the 2020 census, and it is the largest city in Oregon along the Columbia River outside the Portland Metropolitan Area. The Dalles is 75 miles east of Portland, within the Columbia River Gorge National Scenic Area.