As the use of 3D multimedia contents has been popularized recently, next generation mobile devices are also expected to support the 3D contents. For displaying images on small-sized display panels of mobile devices, content-aware image retargeting has attracted a lot of interest due to its small quality loss of important contents in the images. In this paper, we present a novel content-aware 3D image retargeting method. In the proposed method, the depth information of the 3D image is exploited to impose the perceptual importance on the contents in the scene. Experimental results indicate that the proposed method can preserve important contents much better than the conventional methods using only the color intensity information.