This study examined the effect of intragroup resource sharing on the relationship between corporate control and group-affiliated companies' product innovation in Taiwan. Results from a survey of 42 group-affiliated companies support a contingency approach to innovation. When strategic control is used by the parent company of a business group, high sharing of either intangible resource or executive resource may facilitate group-affiliated companies' product innovation. In contrast, when the parent company emphasizes financial control, high sharing of physical resource can enhance innovation. These findings suggest that executives should be cognizant of several contingencies that might guide their choice among various approaches to corporate control, as well as the effects these choices have on the innovation of their group members. The value of any approach to corporate control can be augmented or diminished by simultaneously managing the resource sharing.