Samhan, or Three Han (Korean: 삼한; Hanja: 三韓), is the collective name of the Byeonhan, Jinhan, and Mahan confederacies that emerged in the first century BC during the Proto–Three Kingdoms of Korea, or Samhan, period. Located in the central and southern regions of the Korean Peninsula, the Samhan confederacies eventually merged and developed into the Baekje, Gaya, and Silla kingdoms. The name "Samhan" also refers to the Three Kingdoms of Korea.
Sam (三) is a Sino-Korean word meaning "three" and Han is a Korean word meaning "great (one), grand, large, much, many". Han was transliterated into Chinese characters 韓, 漢, 幹, or 刊, but is believed by foreign linguists to be unrelated to the Han in Han Chinese and the Chinese kingdoms and dynasties also called Han (漢) and Han (韓). The word Han is still found in many Korean words such as Hangawi (한가위) — archaic native Korean for Chuseok (秋夕, 추석), Hangaram (한가람) — archaic native Korean for Hangang (漢江, 한강), Hanbat (한밭) — the original place name in native Korean for Daejeon (大田, 대전), hanabi (하나비) — a Joseon-era (Late Middle Korean) word for "grandfather; elderly man" (most often 할아버지 harabeoji in present-day Korean, although speakers of some dialects, especially in North Korea, may still use the form hanabi). Ma means south, Byeon means shining and Jin means east.