Provided are a user intention analysis apparatus and method based on image information of a three-dimensional (3D) space. The user intention analysis apparatus includes a 3D space generator configured to generate a 3D virtual space corresponding to an ambient environment, based on physical relative positions of a plurality of cameras and image information generated by photographing the ambient environment with the plurality of cameras, a 3D image analyzer configured to estimate a relative position between a first object and a second object included in the image information in the 3D virtual space and generate contact information of the first object and the second object, based on the relative positions of the first object and the second object, an action pattern recognizer configured to compare the contact information with a pre-learned action pattern to recognize an action pattern of a user who manipulates the first object or the second object, and a user intention recognizer configured to infer a user intention corresponding to the recognized action pattern, based on ontology.