The following list presents the full set of National Register of Historic Places listings in Multnomah County, Oregon. However, please see separate articles for listings in each of Portland's six quadrants.
The Ambassador Apartments is a historic building in downtown Portland, Oregon, United States. Since 1979, it has been on the National Register of Historic Places.
The Santa Barbara Apartments is a building complex on Hawthorne Boulevard in southeast Portland, Oregon listed on the National Register of Historic Places.
The Ball–Ehrman House is a house located in southwest Portland, Oregon, listed on the National Register of Historic Places.
The Simon Benson House is a 19th-century house located in downtown Portland, Oregon. It was listed on the National Register of Historic Places in 1983.
The Cumberland Apartments is a building complex located in downtown Portland, Oregon, that is listed on the National Register of Historic Places.
The Durham–Jacobs House is a house located in southwest Portland, Oregon listed on the National Register of Historic Places.
The Envoy Apartment Building is a building located in southwest Portland, Oregon listed on the National Register of Historic Places. The building was originally apartments but was converted into condominiums in 2004.
The Giesy–Failing House is a house located southwest Portland, Oregon listed on the National Register of Historic Places. It is located in the Southwest Hills neighborhood.
The Brown Apartments is a building complex located in downtown Portland, Oregon, listed on the National Register of Historic Places.
The Calumet Hotel, also known as the Esquire Hotel, is a former hotel building located in downtown Portland, Oregon, that is listed on the National Register of Historic Places. The building was changed from a commercial hotel to a residential hotel for low-income residents in the 1930s. At some point, it took the name Esquire Hotel. By the time of its nomination to the National Register, in 1983, it was vacant. The building was renovated in 2008–09 and is now known as "The Esquire" apartments.
The Jewish Shelter Home, also known as Elmer Colwell House, located in southwest Portland, Oregon, is listed on the National Register of Historic Places.
The Morris Marks House is a house located in southwest Portland, Oregon listed on the National Register of Historic Places. It is located in the Goose Hollow neighborhood, just southwest of downtown Portland. Designed by Portland architect Warren Heywood Williams in an Italianate style, the house was built for Morris Marks, a Portland shoe merchant of Polish descent, in 1882. It was originally located at S.W. 11th Avenue and Clay Street, but in the early 1900s was moved to 1501 S.W. Harrison Street, where it has remained ever since.
The Marquam Manor is a historic residential building located at 3211 SW 10th Avenue in Southwest Portland, Oregon. It was constructed in 1930 by Elmer E. Feig and was listed on the National Register of Historic Places on May 27, 1993.
The Villa St. Clara Apartments is a building complex located in southwest Portland, Oregon listed on the National Register of Historic Places.
The Campbell Hotel, located in northwest Portland, Oregon, is a historic former residential hotel that is listed on the National Register of Historic Places (NRHP). It is now an apartment building named the Campbell Court Apartments.
The Del Rey Apartments, located in northeast Portland, Oregon, are listed on the National Register of Historic Places.
