The Puerto Rico Reconstruction Administration (PRRA) was one of the alphabet agencies of the New Deal established by the administration of President Franklin Delano Roosevelt. Created on May 28, 1935, the PRRA's first directors included American journalist and politician Ernest Gruening and Puerto Rican educator and politician Carlos Chardón. Falling under the authority of the Department of the Interior and the Farm Security Administration (FSA) its primary goals were to establish long term economic stability in Puerto Rico during the Great Depression through job creation, land distribution, public works projects, as well as environmental and health initiatives. The agency was officially liquidated on February 15, 1955.

The alphabet agencies, or New Deal agencies, were the U.S. federal government agencies created as part of the New Deal of President Franklin D. Roosevelt. The earliest agencies were created to combat the Great Depression in the United States and were established during Roosevelt's first 100 days in office in 1933. In total, at least 69 offices were created during Roosevelt's terms of office as part of the New Deal. Some alphabet agencies were established by Congress, such as the Tennessee Valley Authority. Others were established through Roosevelt executive orders, such as the Works Progress Administration and the Office of Censorship, or were part of larger programs such as the many that belonged to the Works Progress Administration. Some of the agencies still exist today, while others have merged with other departments and agencies or were abolished.