The Hôtel van Eetvelde is a historic town house in Brussels, Belgium. It was designed by Victor Horta for Edmond van Eetvelde, administrator of Congo Free State, and built between 1895 and 1898, in Art Nouveau style. It is located at 4, avenue Palmerston/Palmerstonlaan in the Squares Quarter. Two extensions, also designed by Horta, were added between 1898 and 1901.

Victor Pierre Horta was a Belgian architect and designer, and one of the founders of the Art Nouveau movement. He was a fervent admirer of the French architectural theorist Eugène Viollet-le-Duc and his Hôtel Tassel in Brussels (1892–93), often considered the first Art Nouveau house, is based on the work of Viollet-le-Duc. The curving stylized vegetal forms that Horta used in turn influenced many others, including the French architect Hector Guimard, who used it in the first Art Nouveau apartment building he designed in Paris and in the entrances he designed for the Paris Metro. He is also considered a precursor of modern architecture for his open floor plans and his innovative use of iron, steel and glass.