Fascist architecture is a style of architecture developed by architects of fascist societies in the early 20th century. The style gained popularity in the late 1920s with the rise of modernism along with the nationalism associated with fascist governments in western Europe. The style resembles that of ancient Rome. However, the fascist-era buildings lack complexity of design, and were constructed with symmetry, simplicity, and a general lack of ornateness. Both Benito Mussolini and Adolf Hitler utilized the new style of architecture as one of many ways to unify the citizens of their nations and attempt to mark a new era of nationalist culture, and to exhibit the absolute rule of the nation.

Today, new fascist architecture is scarce because of the axis powers defeat in World War II. The fascist political ideology quickly went into decline along with the style of architecture after World war II. As a result, the post-fascist era has yielded nearly no new edices of this style.

The fascist style of architecture reflects the values of Fascism as a political ideology that developed in the early 20th century after World War I. The philosophy is defined by a strong nationalist people governed by a totalitarian government. With regards to morals, a fascist society views the nation and race as supreme, and considers them more important than the individual. A fascist nation purges all cultures and ideas not descending from the history of the national culture. The vision of a strong, unified, and economically stable nation seemed appealing to western Europe after the physical and economic destruction after World War I, which contributed to the rise of fascism and corporatism.