The image projection apparatus projects an image onto a projection surface through a projection optical system including a focus element (104) movable in an optical axis direction. The apparatus includes a shift mechanism that moves the projection optical system in a shift direction including a directional component orthogonal to the optical axis direction so as to move a position of the projected image on the projection surface, a shift position detector that detects a shift position of the projection optical system moved by the shift mechanism, a temperature detector that detects a temperature, and a controller that moves the focus element. The controller moves the focus element depending on the temperature detected by the temperature detector and on the shift position detected by the shift position detector.