In recent years, the variation in firms' tax-avoidance behavior has attracted a lot of attention, both theoretically and empirically. This study investigates the governance role of multiple large shareholders in firms' tax-avoidance behavior, using a sample of Chinese state-controlled listed firms over the period 2004–2016. We find that the ownership stake of a firm's largest shareholder is negatively associated with tax avoidance among state-controlled firms. Second, other large non-state shareholders negatively affect tax avoidance of state-controlled firms. The former effect is particularly strong when the local government is the controlling shareholder. Finally, differences in institutional quality influence the largest shareholder's tendency to engage in tax avoidance in state-controlled firms. For state-controlled firms, a better institutional environment elicits more tax avoidance and thus curtails minority-investor expropriation.