When dividing attention across locations in 2-D space, responses to redundant targets are generally faster than responses to single targets. The goal of the current study was to establish whether such redundancy gains, as they are known, also arise when redundant targets are (1) defined by shape-alone information presented in different depth planes, and (2) defined by shape and depth information. In the first experiment, participants were asked to respond to the presence of one and/or two target stimuli that were stereoscopically presented at a near-depth plane, a far-depth plane, or distributed across the two depth planes. Redundancy gains were obtained for all depth conditions and the size of the effects did not vary as a function of whether the stimuli appeared in the same or different depth planes. This suggests that attention can be effectively divided across locations in 3-D space. In the second experiment, participants responded to the appearance of a single target stimulus that either had the correct shape and/or depth. Evidence for an advantage of redundant targets (i.e., with the proper shape and depth) was again obtained, which shows that attention can also be divided between shape and depth information.