This study aimed to localize the impacted maxillary canine by conventional radiography and computed tomographic images. A sample of ten Egyptian patients (seven males and three females) having thirteen impacted maxillary canines was selected. Their age ranged from seventeen to thirty years old, representing the permanent dentition stage of development. Localization of the impacted maxillary canines was determined in the three planes of space using conventional radiographs and computed tomographs. The results of this study concluded that: conventional occlusal and panoramic radiographs can favourably identify impacted maxillary canine positions. These images compare well with computed tomographic images, based on measurements of the transverse sectors and the angular measurements. The axial computed tomographic images did not reveal any advantage over the 3-D computed tomographic reformatted images in determining the bucco-palatal positions of impacted maxillary canines. Clinicians can consider conventional panoramic radiographs as an adequate and accurate tool for the localization of the vertical position of the impacted maxillary canine when used in conjunction with 3-Dcomputed tomographic reformatted images. For buccally impacted maxillary canines, the transverse sectors from the occlusal radiographs and the vertical grades from the panoramic radiographs as well as the distance to the buccal cortex from the axial computed tomographic image can accurately determine their location three-dimensionally. However, for palatally impacted maxillary canines, the transverse sectors, vertical grades and the distance to the mid-sagittal suture as well as the distance to the palatal cortex can accurately determine their locations three-dimensionally.