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 Kenton Hotel is a historic hotel in Portland, Oregon. It was built in 1909, added to the National Register of Historic Places on October 16, 1990, and identified as a contributing resource in the Kenton Commercial Historic District when the district was added to the National Register on September 3, 2001.
The International Harvester Company Warehouse is a building in southeast Portland, Oregon listed on the National Register of Historic Places.
The Frigidaire Building or Templeton Building is a building in southeast Portland, Oregon listed on the National Register of Historic Places. The building was designed by William C. Knighton and Leslie D. Howell and completed in 1929 for O.E. (Oscar) Heintz and occupied by Frigidaire until 1934. When prohibition was repealed in 1933, the Oregon Liquor Control Commission was created through Oregon's Knox Bill. OLCC occupied the building once Frigidare left. Later it was occupied by R.J. Templeton, an auto parts distributor.
The Osborn Hotel is a building in southeast Portland, Oregon, listed on the National Register of Historic Places.
The Elm Street Apartments is a building complex 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 Bertha M. and Marie A. Green House is a building located in southwest 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 H. Liebes and Company Building is a commercial building located at 625 SW Broadway in southwest Portland, Oregon. It was listed on the National Register of Historic Places on September 12, 1996.
The Lipman–Wolfe and Company Building is a building located in downtown Portland, Oregon, listed on the National Register of Historic Places. It was originally the flagship store of the Lipman-Wolfe & Company department store. The architects were Doyle & Patterson.
The Medical Arts Building is a historic building located at 1020 SW Taylor Street in Downtown Portland, Oregon. It was completed in 1925 by the Houghtaling & Dougan architecture firm, and was listed on the National Register of Historic Places on November 6, 1986.
The Neighbors of Woodcraft Building, also known as the Tiffany Center, is a building located in southwest Portland, Oregon, listed on the National Register of Historic Places. Construction of the building was commissioned by the Neighbors of Woodcraft (NOW), a non-profit fraternal benefit society based in Oregon since 1905 and operating in several western states, for use as a national headquarters and clubhouse. The building was completed in May 1929 and dedicated in June. In 1993, NOW sold the building and moved out of its remaining office space there. The building was added to the National Register in February 1996.
The Portland Police Block, located in downtown Portland, Oregon, and at the southern edge of the Old Town historic district, is listed on the National Register of Historic Places. The building served as the headquarters of the Portland Police Bureau until 1984.
The Roosevelt Hotel was a hotel located in downtown Portland, Oregon at 1005 SW Park. It was built in 1924 and is listed on the National Register of Historic Places. In 2000–2001 the building was converted to condominiums.
The Wilcox Building is a building located in downtown Portland, Oregon, listed on the National Register of Historic Places. The building was designed by Whidden and Lewis. The design is similar to the Failing Office Building (1907) and Stevens Building (1914), also by Whidden and Lewis.
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 Honeyman Hardware Company Building is a historic commercial building located at 832 NW Hoyt Street in Northwest Portland, Oregon. It was completed in 1912 and was listed on the National Register of Historic Places on December 15, 1989.
The Packard Service Building is a building located in northwest Portland, Oregon listed on the National Register of Historic Places.
