The Casa Lleó Morera (Catalan pronunciation: [ˈkazə ʎəˈo muˈɾeɾə]) is a building designed by noted modernisme architect Lluís Domènech i Montaner, located at Passeig de Gràcia 35 in the Eixample district of Barcelona.

[3] The building was not only the result of an architectural project, but —common practice in Catalan modernism architecture—, several artists collaborated with Domènech i Montaner so as to make a complete artwork, inspired in natural and organic motifs: Lluís Bru and Mario Maragliano were responsible of the mosaic work, Eusebi Arnau made the sculptures, Antoni Serra i Fiter elaborated the ceramics, and Gaspar Homar designed the decoration and the furniture.

The façade and ground floor of the building were decorated with big and varied modernist ornaments, with some outstanding sculptures by Eusebi Arnau surrounding the entrance, which represented two couples of feminine figures holding vases.

On the first floor, aside the windows, two couples of feminine figures can also be found, showing several objects related to the technological improvements made in that period, such as the phonograph, electricity, telephone and photography.

In 1943, Raimon Duran i Reynals signed a refurbishing project for the ground floor, designed by Francisco Ferrer Bartolomé according to an assignment by Loewe so as to open a store.