Juan Belaieff
Juan Belaieff (Ivan Timofeyevich Belyaev; 19 April 1875 – 19 January 1957) was a Russian and Paraguayan explorer, cartographer and soldier, notable for his investigation and mapping of the Gran Chaco region and for his role as an officer in the Paraguayan army during the Chaco War.
Also recorded as Ivan Belyayev · Ivan Belyaev · Ivan Timofeyevich Belyayev
Juan Belaieff

Исторический Вестник (Istorichesky Vestnik), № 12. 1900 · Public domain
- Name
- Juan Belaieff
- Born
- 19 April 1875
- Birthplace
- Saint Petersburg, Russia
- Died
- 19 January 1957
- Place of death
- Asunción, Paraguay
- Education
- Michael Artillery School
- Nationality
- Russian Empire · Paraguay
- Occupation
- geographer · military personnel · cartographer
- Honours
- Order of Saint Anna, 3rd class · Order of Saint Stanislaus, 3rd class · Order of St. George and 4th class
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Documentary summary
Juan Belaieff (Ivan Timofeyevich Belyaev; 19 April 1875 – 19 January 1957) was a Russian and Paraguayan explorer, cartographer and soldier, notable for his investigation and mapping of the Gran Chaco region and for his role as an officer in the Paraguayan army during the Chaco War.
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Awarded · outgoing
Order of Saint Anna
Term
Awarded · outgoing
Order of Saint Stanislaus
Term

Awarded · outgoing
Order of St. George
Term
The Beginnings of Macedonian Academic Research and Institution Building (19th ‒ Early 20th Century) , p. 155
Citizen Of · outgoing
Paraguay
Place
Citizen Of · outgoing
Russian Empire
Place
Born In · outgoing
Saint Petersburg
Place
Documentary evidence
Documentary basis
Authority files
wikidata · Q4083441 · wikipedia · Juan Belaieff
In this article
Key facts
Key facts
• Name — Juan Belaieff • Born — 19 April 1875 • Birthplace — Saint Petersburg, Russia • Died — 19 January 1957 • Place of death — Asunción, Paraguay • Allegiance — * Russian Empire • White Movement • Republic of Paraguay • Branch — * Imperial Russian Army • White Movement • Paraguayan Army • Rank — Major-General • Unit — Volunteer Army • Battles — * First World War • Russian Civil War • Chaco War • Education — Michael Artillery School
Biography
Biography
Juan Belaieff was born as Ivan Belyaev in Saint Petersburg, Russia. His father was a military officer from a noble family. Belaieff signed up with the Russian Army in 1892, and graduated from the Michael Artillery School in 1893. He participated in World War I and was promoted to the rank of colonel in 1915, and of a major-general in 1917. He was seriously wounded in 1916 and spent several months in a hospital. When the Russian Civil War started in 1918, Belaieff joined the Volunteer Army under the command of Pyotr Wrangel. On March 25, 1920, he was evacuated from Novorossiysk to Gallipoli, and from there moved to Bulgaria and eventually in 1923 to Buenos Aires. He was interested in creating a Russian colony in South America. After failing to find enough support of the idea in Argentina, he moved in 1924 to Paraguay, where he was accepted to military service, and managed to relax the conditions for immigration of the former white movement officers who were accepted to Paraguayan military service as well. He was detached to the General Staff and founded the Engineering Department there, where he employed 12 Russian officers who arrived to Paraguay after him. He was also appointed a professor at the Military Academy. In Paraguay, he was known as Juan Belaieff. In October 1924, Belaieff was sent on a mission to the Gran Chaco, a vast and sparsely populated area on the west bank of the Paraguay river, which needed to be explored and mapped. He was also commissioned to demarcate the boundaries with Brazil and Bolivia. In total, Beliaeff led 13 expeditions to the Gran Chaco, which he mapped, and he also established good relations with the local indigenous Maká people population who held him in high esteem. The Maká were hired as his guides and porters and Belaieff became interested in their language and culture, performing anthropological and ethnographic studies; Belaieff acquired such a deep understanding of the indigenous language that he was able to compile a dictionary. In March 1931, he became the first white person to reach Lake Pitiantuta, then the largest lake of the Gran Chaco region. Since 1930, when the Chaco War was approaching, Belaieff was patrolling the Gran Chaco and suggesting locations for forts (including the one by Lake Pitiantuta). Although he did not participate in combat, the Paraguayan army heavily relied on his knowledge of the area. In 1932, he was promoted to the rank of a Division General (honoris causa), and since 1933, he was a councilor of the President and a member of the Army General Staff. Juan Belaieff died in Asunción on January 19, 1957. He belonged to the Russian Orthodox Church. According to his will, after the memorial service his body was transported to the west bank of the Paraguay river, where the Gran Chaco region begins, and buried in a mausoleum inside a Maká reservation. After his death, Belaieff became a messianic deity for the Maká people.
Identity
Identity
Juan Belaieff is recorded with the occupation military personnel. Recorded as geographer, military personnel and cartographer.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1875
Juan Belaieff was born on 19 April 1875.
1957
Juan Belaieff died on 19 January 1957.
Places
Named by the record
Places
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Saint Petersburg.
Birth place
Asunción.
Death place
Primary material
Documents and archives
reference work
- “Juan Belaieff”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority record
- Wikidata, structured authority record Q4083441: Juan Belaieff
General reference · Wikidata
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Distinctions
1- Order of St. GeorgeTerminology
Established from a fact already recorded on a verified source.
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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