The name “Buna” came from a Spanish word “Buena” which means good or right conduct. Buna was divided into two barangays namely, Buna Lejos and Buna Cerca. It was first named “Buena Conducta” was changed to Buna Lejos because it is located farther from the poblacion, while Buna Cerca is nearer. In 1991, it was divided into Buna Lejos I, as the mother barangay and Buna Lejos II, the daughter barangay.
Primarily classified as rural with a total land area of 191.93 hectares. Barangay Buna Lejos II of located more or less four kilometers from the poblacion. It is bounded on the north by Barangay Buna Cerca, on the south by Barangay Mahabang Kahoy Lejos, on the east by Barangay Buna Lejos I, and on the west by Barangay Mahabang kahoy Cerca.
