Visuospatial reasoning is an important cognitive skill involving the manipulation and representation of objects in space. This skill plays a critical role in our ability to navigate daily life—from storing memories to making predictions about the future. Representational drawing skills, which involve realistic depiction of objects, have been shown to correlate with related cognitive domains such as visual memory and attention, but the extent to which artistic expertise relates to more general processes such as visuospatial reasoning remains unclear. In the current cross-sectional study, we tested the extent to which visual arts expertise relates to the mental transformation of objects in space. Implementing an online and asynchronous design, we compared the performance of representational visual artists (N = 83) to a control group of descriptive writers (N = 81) in a variety of visuospatial, verbal, and control tasks. Our results showed a double-dissociation consistent with domain-specific expertise where visual artists performed better in mental transformation tasks and writers showed better vocabulary knowledge. There were no group differences in fluid intelligence. Using an individual differences approach, we observed a moderate positive correlation between drawing skills and mental transformation performance, irrespective of group affiliation. Furthermore, drawing techniques involving the formation of a robust representation were positively correlated with both mental transformation and drawing skills. Together, our results suggest that representational drawing skills are positively correlated with enhanced visuospatial reasoning and the transformation of mental representations beyond the context of drawing.