Mental rotation is a spatial ability allowing one to represent and rotate an object in one’s mind, and its performance declines with age. Given previous findings indicating that likening a to-be-rotated object to a human body improves mental rotation performance in young adults, we examined whether this human-body analogy would improve older adults’ mental rotation performance. We also tested whether the human-body analogy effect is age-dependent. In the present study, we analyzed data from 423 community-dwelling older adults (age range: 86–97 years; 219 males and 204 females) who completed a paper-and-pencil mental rotation test that comprised one item for abstract objects (control condition) and one for human-like objects (embodied condition). The results revealed that more participants correctly answered the item in the embodied condition (32.2%) compared to that in the control condition (19.6%), indicating that the human-body analogy is effective in an oldest-old population (i.e., people aged over 85 years). Notably, we found age differences in human-body analogy effects. While accuracy for mental rotation of abstract objects declined with age, accuracy for embodied objects was preserved with age. These findings suggest that the human-body analogy may prompt older adults to adopt a holistic, rather than a piecemeal, rotation strategy.