This study investigates how family control influences entry mode choice between joint ventures and wholly owned subsidiaries. Based on past studies revealing family-controlled firms’ unique concerns regarding the preservation of socioemotional wealth, the researchers posit that, firms with higher family control respond more drastically to perceived environmental uncertainty when choosing their entry mode. The researchers hypothesize that, when perceiving high environmental uncertainty, firms with higher versus lower family control are more likely to choose joint ventures. However, when perceiving low environmental uncertainty, firms with higher versus lower family control tend to choose wholly owned subsidiaries. The empirical results obtained from a sample of 1,644 investments undertaken by publicly listed companies in Taiwan support the hypotheses.