Wallis House, Heritage condominium building in Ottawa, Canada

Wallis House is a landmark building at the corner of Rideau Street and Charlotte Street in Ottawa, constructed between 1873 and 1876 as the Carleton County Protestant General Hospital. The original three-storey structure was expanded with an east wing between 1887 and 1898. It now serves as a 47-unit condominium complex after a heritage restoration.

The building was constructed in 1873 as Carleton County Protestant Hospital, originally serving the region's medical needs. During World War II, it was repurposed for use by women of the Royal Canadian Naval Service, fundamentally changing its function.

The name honours Provo Wallis, a War of 1812 hero from Halifax who rose to Admiral of the Fleet; the navy chose it in 1943. Brass plaques unveiled in 1990 and 1997 commemorate him. In 1946 veterans and squatters occupied the empty building until the Governor General's Foot Guards removed them, prompting subsidized housing.

Wallis House stands at the corner of Rideau Street and Charlotte Street, east of downtown Ottawa, and is a private condominium building, so the interior and any outdoor space are not open to visitors. The 47 units were carved out of the former hospital during the 1990s restoration, and the parking lot behind the building became a row of town houses.

The navy named the building after Provo Wallis, a War of 1812 hero from Halifax, Nova Scotia, who rose to Admiral of the Fleet and lived from 1791 to 1892. Two brass plaques honouring him were unveiled at the site in 1990 and 1997.