Oregon's 18th House district

District 18 of the Oregon House of Representatives is one of 60 House legislative districts in the state of Oregon. As of 2021, the boundary for the district includes portions of Clackamas and Marion counties. The district includes Aurora, Hubbard, Molalla, Silverton, and Mount Angel. The current representative for the district is Republican Rick Lewis of Silverton.

Election results
District boundaries have changed over time. Therefore, representatives before 2021 may not represent the same constituency as today. General election results from 2000 to present are as follows: