The government of Portland, Oregon is based on a city commission government system. Elected officials include the mayor, commissioners, and a city auditor. The mayor and commissioners are responsible for legislative policy and oversee the various bureaus that oversee the day-to-day operation of the city. Portland began using a commission form of government in 1913 following a public vote on May 3 of that year. Each elected official serves a four-year term, without term limits. Each city council member is elected at-large.

Portland City Hall is the headquarters of city government of Portland, Oregon, United States. The four-story Italian Renaissance-style building houses the offices of the City Council, which consists of the mayor and four commissioners, and several other offices. City Hall is also home to the City Council chambers, located in the rotunda on the east side of the structure. Completed in 1895, the building was added to the National Register of Historic Places on November 21, 1974. City Hall has gone through several renovations, with the most recent overhaul gutting the interior to upgrade it to modern seismic and safety standards. The original was built for $600,000, while the 1996 to 1998 renovation cost $29 million.