An automatic camera lens module retracting/extending apparatus for mobile communication terminals converts rotating movement of a driving motor into rectilinear movement to automatically retract/extend a camera lens module into/from a mobile communication terminal including a lens housing extending a predetermined length in the longitudinal direction thereof, and a lens cam assembly to accommodate the lens housing therein, the lens cam assembly converting rotating movement of a driving motor into rectilinear movement to automatically retract/extend the lens housing into/from the lens cam assembly in the longitudinal direction of the lens housing. The lens housing is automatically rotated about a rotating axis of the lens housing by means of the lens cam assembly when the lens housing extends from the lens cam assembly.