Javier Arias Stella (August 2, 1924 – February 25, 2020) was a Peruvian pathologist, politician, diplomat, academic, and lecturer who variously served as Minister of Public Health of Peru (1963-1965, 1967-1968), Minister of Foreign Relations of Peru (1980-1983), and President of the United Nations Security Council (March 1984, April 1985), the former two positions having been served under Peruvian president Fernando Belaúnde Terry.

Arias Stella's undergraduate studies were done first at the San Marcos National University's School of Science in Peru from 1942 to 1944 and then at the Faculty of Medicine from 1945 to 1951, from which he earned his bachelor's in 1951.

[4] Later in his life, he became involved in researching how altitude changes in the Andes affected anatomy and histology in human beings, men specifically.

Arias Stella's research showed that "hypoxia-induced thickening of the pulmonary arteriolar walls" was the main cause for the hypertension.

During the early skirmishes over an outpost in Paquisha, he was quoted in newspapers as stating that Peru would proceed to recapture the rest of the territory that Ecuadorian forces were encroaching on.