A vulnerability assessment of Syrian refugees in Istanbul was conducted through household surveys, interviews, and focus groups. Key findings include: 1) The average Syrian refugee family in Istanbul consists of over 5 members living with another family due to high housing costs, with most refugees being recent arrivals from southeast Turkey. 2) Refugees face difficulties registering which limits access to healthcare and education, while a lack of Arabic services also poses a barrier. Exploitation is common in the low-wage labor market. 3) While shelter conditions are adequate, overcrowding risks health and safety. Most refugees receive irregular, ad hoc humanitarian assistance and struggle to afford basic needs. 4) Despite some host community resentment over economic impacts