The Primer Congreso del Hombre Andino is inaugurated in Arica, Chile.

Primer Congreso del Hombre Andino was an academic conference in northern Chile organized by the northern branch of the University of Chile in June 1973. Its subject was the Indigenous societies of the Andean world, be these modern, historical or archaeological. The conference was an important milestone in the development of Andean studies including Andean archaeology and for Chile it marked the maturation of academic studies carried out by scholars based in its northern cities.

Arica is a commune and a port city with a population of 222,619 in the Arica Province of northern Chile's Arica y Parinacota Region. It is Chile's northernmost city, being located only 18 km (11 mi) south of the border with Peru. The city is the capital of both the Arica Province and the Arica and Parinacota Region. Arica is located at the bend of South America's western coast known as the Arica Bend or Arica Elbow. At the location of the city are two valleys that dissect the Atacama Desert converge: Azapa and Lluta. These valleys provide citrus and olives for export.

June 21 is the 172nd day of the year in the Gregorian calendar; 193 days remain until the end of the year.