Samguk yusa or Memorabilia of the Three Kingdoms is a collection of legends, folktales and historical accounts relating to the Three Kingdoms of Korea, as well as to other periods and states before, during and after the Three Kingdoms period. "Samguk yusa is a historical record compiled by the Buddhist monk Il-yeon in 1281 in the late Goryeo Dynasty." It is the earliest extant record of the Dangun legend, which records the founding of Gojoseon as the first Korean nation. The Samguk yusa is National Treasure No. 306.

The Three Kingdoms of Korea or Samguk competed for hegemony over the Korean Peninsula during the ancient period of Korean history. During the Three Kingdoms period, many states and statelets consolidated until, after Buyeo was annexed in 494 and Gaya was annexed in 562, only three remained on the Korean Peninsula: Goguryeo, Baekje and Silla. The "Korean Three Kingdoms" contributed to what would become Korea; and the Goguryeo, Baekje and Silla peoples became the Korean people.