The House of the Livonian Noble Corporation () is a historical building in Riga, Latvia, constructed to house the Landtag of the Livonian Noble Corporation in the Governorate of Livonia. Designed by architects Robert Pflug and Jānis Frīdrihs Baumanis, it was opened in 1867 and housed the Landtag until Latvian independence in 1919, and was subsequently damaged by fire in 1921. Today it is home to the Saeima, the parliament of Latvia. It is located in UNESCO listed Old Riga, directly opposite St. James's Cathedral. The architectural style is neo-Renaissance.