Peterkův dům, Multifamily residential building in New Town, Prague, Czech Republic.

Peterkův dům is a residential building at Wenceslas Square number 12 that combines Art Nouveau design elements with a traditional facade. The multistory structure contributes to the street's architectural character and reflects construction practices in central Prague around the turn of the 19th and 20th centuries.

The building was completed in 1899 by architects Jan Kotěra and Vilém Tierhier during a period of intensive urban renewal. Its construction reflects the Art Nouveau movement that shaped Prague's cityscape at that time.

The house takes its name from a banker called Peterka who lived in one of its flats during the rebuilding. His reception rooms survive, and the interior decoration includes a triptych by Jan Preisler titled Spring. Above the entrance stands a Madonna by Stanislav Sucharda.

Peterkův dům stands at Václavské náměstí 12 in Nové Město, its three-axis facade facing the square; the entrance is framed by a wide glazed oval arcade with two narrower glazed side arcades. The courtyard wing adjoins on the left and the rear plot borders the grounds of the Church of Our Lady of the Snows. The building is a listed cultural monument, so visits focus on the exterior and vestibule.

Above the entrance stands a Madonna by sculptor Stanislav Sucharda, who also made the sculptural decoration of the facade. For the interior, painter Jan Preisler created a triptych titled Spring. The banker Peterka, after whom the house is named, lived in one of the flats during the rebuilding.