Raas may refer to: Places Raas (It. Rasa), a village in the municipality of Natz-Schabs, South Tyrol, Italy Raas Island, an island and district of East Java, Indonesia South Caribbean Coast Autonomous Region, formerly the South Atlantic Autonomous Region (Región Autónoma del Atlántico Sur), an autonomous region of Nicaragua Science and technology Renin–angiotensin system, also known as the renin–angiotensin–aldosterone system, a hormone system that helps regulate long-term blood pressure and blood volume in the body Recovery as a service Robot as a service Runway Awareness and Advisory System, an airplane avionics system to improve flight crew situational awareness when operating at airports Other uses Raas (surname) Dandiya Raas, a folk dance from the Indian state of Gujarat, often associated with Garba Rasa lila, also known as Raas Leela, a traditional Indian dance