A door lock apparatus, at both sides of a region interposing a second link lever therebetween, includes a sector lever shaft and an inside lever shaft that extend in parallel with a swinging shaft of the second link lever. The door lock apparatus also includes an inside handle lever swingably arranged about the inside lever shaft, and when an inside door handle arranged inside a vehicle is open-operated while the second link lever is disposed in a cancel position, moves the second link lever upwards by swinging about the center of the inside lever shaft, and when the inside door handle is open-operated while the second link lever is disposed in a non-cancel position, swings the sector lever in a locked position to an unlocked position about the center of the sector lever shaft, by swinging about the center of the inside lever shaft.