Sias or SIAS may refer to: Sias, West Virginia, unincorporated community in Lincoln County, West Virginia, United States Sias International University, a private college affiliated with Zhengzhou University in Henan Province, People's Republic of China Some Institutes for Advanced Study
People with the surname Don E. Sias (died 1934), American politician
SIAS Social Interaction Anxiety Scale, a self-report scale that measures distress when meeting and talking with others Spina iliaca anterior superior, medical Latin term for the Anterior superior iliac spine Student Investment Advisory Service, student managed investments fund and part of Simon Fraser University Serviciul pentru Intervenții și Acțiuni Speciale, a task force of the Romanian Police