Although the United States (US) has been involved in nation-building efforts for the past 100 years it does not have a doctrinal definition to articulate what nation building is. Another challenge for the US is the lack of a designated agency within the US Government (USG) to lead the effort. First, an interagency, agreed upon, doctrinal definition of nation building must be established. Following this, each department and agency within the USG must be examined to identify the role each plays within a nation-building operation. This examination will allow the identification of the relationships between departments of the USG and the resources available to conduct nation building.This thesis examines the role of Army Special Operation Forces (ARSOF) in nation building. In order to do so, a definition of nation building is established, key tasks of nation building are derived, and military tasks that support a nation building operation are developed. These military tasks are analyzed against the doctrinal missions and capabilities of ARSOF in order to identify how ARSOF can contribute to nation building. This thesis concludes with recommendations on the employment of ARSOF in nation-building operations.