Los Altos Apartments, Mission Revival residential complex on Wilshire Boulevard, Los Angeles, USA.

Los Altos Apartments is a Mission Revival-style apartment building on Wilshire Boulevard in Los Angeles, designed by Edward B. Rust and Luther Mayo and completed in 1925. It holds 75 units, and its 1920s parking garage was reunited with the building after having been split off following World War II.

Built in 1925 by architects Edward B. Rust and Luther Mayo, the building was Los Angeles' first cooperative housing development. The project represented an innovative approach to residential living during a period of rapid urban growth.

The basement housed the Jancar Kuhlenschmidt Gallery, where New York artists Richard Prince and Louise Lawler held their first Los Angeles exhibitions. In the 1980s residents included Jeff Ayeroff, later co-founder of Virgin Records America, and screenwriter Becky Johnston, who wrote scripts for Prince and Barbra Streisand while living there.

The building is a private residence at 4121 Wilshire Boulevard, so visits are limited to the exterior and the rooftop sign seen from the street. Its 1920s parking garage, separated after World War II, was reunited with the apartments during the 1990s restoration. The 75 units now serve very low income and market-rate tenants.

The Hearst suite measured 3,300 square feet across two storeys, built for William Randolph Hearst and Marion Davies as their city flat when the building opened in 1925 as Los Angeles' first co-op. The co-op went bankrupt during the Great Depression, after which the building operated as the Los Altos Hotel and Apartments.