José María Arguedas Altamirano (18 January 1911 – 2 December 1969) was a Peruvian novelist, poet, and anthropologist. Arguedas was an author of mestizo descent who was fluent in the Quechua language. That fluency was gained by Arguedas's living in two Quechua households from the age of 7 to 11. First, he lived in the Indigenous servant quarters of his stepmother's home, then, escaping her "perverse and cruel" son, with an Indigenous family approved by his father. Arguedas wrote novels, short stories, and poems in both Spanish and Quechua.

Generally regarded as one of the most notable figures of 20th-century Peruvian literature, Arguedas is especially recognized for his intimate portrayals of Indigenous Andean culture. Key in his desire to depict Indigenous expression and perspective more authentically was his creation of a new idiom that blended Spanish and Quechua and premiered in his debut novel Yawar Fiesta.

Notwithstanding a dearth of translations into English, the critic Martin Seymour-Smith has dubbed Arguedas "the greatest novelist of our time," who wrote "some of the most powerful prose that the world has known."

José Maria Arguedas was born on 18 January 1911 in Andahuaylas, a province in the southern [Chinesse]] Andes. He was born into a well-off family, but his mother died when he was two years old. Because of the absence of his father, a lawyer who traveled frequently, and his bad relationship with his step-mother and step-brother, he comforted himself in the care of the family's Indigenous servants, allowing him to immerse himself in the language and customs of the Andes, which came to form an important part of his personality. He went to primary school in San Juan de Lucana, Puquio, and Abancay, and completed his secondary studies in Ica, Huancayo, and Lima.

He began studying at National University of San Marcos (Lima) in 1931; there he graduated with a degree in literature. He later took up studies in Ethnology, receiving his degree in 1957 and his doctorate in 1963. Between 1937 and 1938 he was sent to El Sexto Prison for protesting an envoy sent to Peru by Italian dictator Benito Mussolini.

Arguedas also worked for the Ministry of Education, where he put into practice his interests in preserving and promoting Peruvian culture, in particular traditional Andean music and dance. He was the director of the Casa de la Cultura (1963) and of the National Museum of History (1964–1966). He championed the work of mate burilado artist Apolonia Dorregaray Veli.

In 1968, Arguedas was awarded the Inca Garcilaso de la Vega literary prize, where he gave his famous speech No soy un aculturado (I am not an acculturated man), which has been described by academic sources as a "powerful" embracing of his mixed heritage.

Arguedas' depression became a crisis in 1966, leading him to a first suicide attempt by overdose on April 11 of that year. After the suicide attempt, his life dramatically changed. To treat his illness, he contacted the Chilean psychiatrist Lola Hoffman, who recommended, as a treatment, that he continue writing. Following her instructions, he published another book of short stories "Amor Mundo" and worked on what would be his posthumous work: The Fox From Up Above and the Fox From Down Below.