The name Bilguun has its origins in the Mongolian language and culture. It is believed to have derived from the word "bilgee," which means "wise" or "knowledgeable." This name was particularly popular among the nomadic tribes of the Mongolian steppes during the medieval period.

One of the earliest recorded instances of the name Bilguun can be found in the Secret History of the Mongols, a 13th-century literary work that chronicles the life and reign of Genghis Khan. In this text, Bilguun is mentioned as the name of one of the noble warriors who served under the great Mongol leader.

Throughout history, the name Bilguun has been associated with individuals who have made significant contributions in various fields. One notable figure was Bilguun Tsogt-Ochir (1867-1922), a Mongolian politician and revolutionary who played a crucial role in the country's struggle for independence from the Qing dynasty in the early 20th century.

Another prominent individual was Bilguun Khorloogiin (1891-1938), a Mongolian writer and scholar who made significant contributions to the preservation and promotion of traditional Mongolian literature and culture. His works, such as the epic poem "The Sorcerer's Apprentice," are considered literary masterpieces in Mongolia.

In the realm of sports, Bilguun Bat-Erdene (born 1985) is a Mongolian wrestler who has won multiple medals, including gold, in international competitions. He is celebrated as one of the most successful athletes in his country's history.

Bilguun Amartuvshin (born 1989) is a Mongolian film director and screenwriter who has received critical acclaim for his works, including the award-winning film "Khuren Tsogts." His films often explore themes of identity, tradition, and the complexities of modern Mongolian society.

Another notable figure was Bilguun Jalan (1819-1891), a renowned Buddhist monk and scholar who made significant contributions to the preservation and study of Mongolian Buddhist texts and practices. He is revered for his extensive knowledge and his efforts in promoting spiritual and intellectual growth within the Mongolian Buddhist community.