Palacio Ariztía, Neoclassical palace in Santiago, Chile.

Palacio Ariztía is a palace displaying French neoclassical features seen in symmetrical columns, ornate corridors, and large mirrors along interior walls. The building contains multiple levels with formal rooms and is now occupied by the Universidad Tecnológica Metropolitana.

Alberto Cruz Montt designed the palace in 1917 for Rafael Ariztía, who lived there twelve years; his widow Teresa Brown sold it to Armando Manni Fernández, who returned it after the Great Depression. Gustavo Ross Santa María bought it and sold it nine years later to the Military Club, which transferred it to the Chamber of Deputies in 1993. It housed the Chamber until 2006.

The central hall displays classical architectural details with multiple columns and decorated stained glass windows that filter light in distinctive ways. These features reflect the tastes that wealthy Santiago families favored in the early 1900s.

The building stands at Avenida Libertador Bernardo O'Higgins 1642, in the Barrio Dieciocho, not Barrio República. In January 2017 it was handed to the Universidad Tecnológica Metropolitana as a concession for restoration, with a centre for outreach and community links planned, so the interior may not be open to visitors.

The ornamental ironwork on the gates and railings came from the Mina Hnos. Ltda. foundry, which also produced the metalwork for the Banco de Chile headquarters, the Club de la Unión and the Banco Central. The building was handed to the Universidad Tecnológica Metropolitana in January 2017 under a concession to restore it and add an outreach centre.