The profitability of a company is linked to the decision making skills of the people within the organization and much research has been done to determine the traits and factors that are common among strong decision makers (Finkelstein & Hambrick, 1996; McLaughlin, 1995; Papenhausen, 2006; Wally & Baum, 1994). Locus of control, a personality trait measured in terms of an internal or external focus, is one factor that may affect the decision making process. The purpose of this study was to provide data to enhance the way in which managers are trained as well as how they are selected and developed. This was accomplished by investigating the relationships between locus of control, decision style, and various demographic characteristics. The Decision Style Inventory and Internal-External Locus of Control Scale were used as the survey instruments for this study (Rotter, 1966; Rowe & Mason, 1987). The sample consisted of two hundred thirty-seven mid-level managers contacted through a marketing database. The survey instruments were administered on line through Survey Monkey, an electronic survey engine. Data was analyzed through multivariate and correlation analysis using SPSS. Results showed no relationship between locus of control and decision styles however, both age and gender had statistically significant relationships with the constructs of decision style and locus of control.