This study explores the type of management styles adopted by construction project managers (PM) in Iran and the relationship between the styles chosen and project success. A sample of 139 project management practitioners participated, and the results were analyzed using robust statistical methods. The results show that although most of the PMs tend to take determined approaches, the rate of adoption of this management style slightly differs from that of the other styles. The results also present that the four dimensions of management style, namely interaction, flexible, proactive and external, would lead the projects to achieve better outcomes and increase the likelihood of success. The findings form an insight into the current practice and may be useful for PMs to improve their management abilities and skills.