Casa de Liniers, Spanish Colonial residence in Montserrat, Argentina.

Casa de Liniers is a Spanish Colonial residence in Montserrat featuring sturdy stone walls, symmetrical windows, and traditional architectural details from the eighteenth century. The structure showcases typical construction methods of early Buenos Aires with its rectangular layout and characteristic features of the period.

The house was built in the late 18th century for Martín Simón de Sarratea, Liniers's father-in-law. Santiago de Liniers, who led the reconquest after the British invasions of 1806 and 1807, lived there between 1808 and 1809. In 1806 General William Beresford is said to have signed the terms of his capitulation inside. It was declared a National Historic Monument in 1942.

Since 2011 the house has housed the Espacio Virrey Liniers, a cultural centre run by the city government. It is closed since 2021 for interior works, so the cultural programme is suspended. The house takes its name from Santiago de Liniers, who lived here in 1808 and 1809.

The house stands at Venezuela 469, at the corner where Defensa and Bolívar meet in Monserrat, not between two neighbourhoods. Since 2021 it has been closed for interior works, so only the whitewashed facade and its arched openings can be seen from the pavement. The entrance is reached by a few steps.

Only the facade and some internal walls survive from the original house; the interior was heavily altered while Editorial Estrada ran printing workshops there. Around 1984 the owners demolished later additions to recover a colonial look, rebuilding roofs, floors, doors and windows. The 1860s–1870s Catastro Beare still shows the earlier layout with several patios.