Ergun or Ergün may refer to:
Places Ergun, Inner Mongolia, China Argun River (Asia), part of the Sino-Russian border
Given name Ergun Caner (born 1966), Swedish-American academic, author, and Baptist minister Ergun Öztuna (1937–2023), Turkish football player Ergün Penbe (born 1972), Turkish football player Ergün Teber (born 1985), Turkish football player Ergün Zorlu (born 1985), Turkish tennis player
Surname Funda Ergun, Turkish-American computer scientist Halil Ergün (born 1946), Turkish actor Sabri Ergun (1918–2006), Turkish chemical engineer Sine Ergün (born 1982), Turkish writer Zeynep Ergun (1953–2022), Turkish linguist