This study presents a comprehensive portrayal of one of the critical actors in the Syrian arena, and one whose role recently became more prominent: the Syrian Democratic Forces (SDF.) It discusses the conditions that led to its formation, its structure, its funding mechanisms and support, its military capabilities, and its grassroots base. The study also presents maps displaying the SDF’s influence and control in Syria, its areas of influence, and its military tactics, which depend primarily on the People’s Protection Forces (YPG). The study also presents prominent international and regional actors’ positions regarding Syria’s Democratic Forces, the relationships it enjoys with actors such as the United States and Turkey, its level of animosity with Turkey.