The Lou Kau Mansion (traditional Chinese: 盧家大屋; simplified Chinese: 卢家大屋; pinyin: Lújiā Dàwū; Portuguese: Casa de Lou Kau) is a historical house in Sé, Macau, China.

[1] The building was built around 1889 as a home of Lou Kau, a prominent Chinese merchant.

[2][3][4][5] The building has been listed as part of the historic center of Macau and a protected property in 1992.

In 2002, the Macau Bureau of Culture started the maintenance for the building and was eventually opened to the public in 2005.

The building regularly hosts small-scale concerts of the Macau Chinese Orchestra.