Francis Ermatinger House, History museum in Oregon City, United States

The Francis Ermatinger House is a history museum housed in a residential building with Greek Revival and Federal style architecture, featuring wooden construction and classical design details in Oregon City. Inside, visitors can explore several rooms that provide insight into how people lived during that period.

Built in 1843 for Francis Ermatinger, Chief Trader of the Hudson's Bay Company's Columbia District and later Treasurer of the Provisional Government of Oregon, the house is the third oldest in Oregon and the oldest in Clackamas County. It originally stood on the waterfront near Willamette Falls. Ermatinger stayed in Oregon City after the company abandoned its operations there in 1845. The house was moved in 1910 and again in 1986, and was listed on the National Register of Historic Places in 1977.

The house displays how early settlers lived in Oregon and the role the Hudson's Bay Company played in shaping the region. Visitors see everyday objects that reveal the importance of the fur trade to this part of America.

The house is open for guided and self-guided tours on Fridays and Saturdays, and the City of Oregon City Parks and Recreation Department runs it since reopening on July 7, 2018. It sits at the corner of 6th and John Adams streets, next to the Stevens Crawford House museum. The building was closed to the public from 2011 until repairs were finished, and its windows had been removed while it was unstable.

In the left parlor, a famous coin toss between Francis Pettygrove and Asa Lovejoy in 1845 determined Portland's name. This room remains one of the highlights for visitors interested in the origins of the nearby city.