Social work research employs a variety of tools to collect, analyze, and interpret data related to individuals, groups, communities, and social institutions. The choice of research tool depends on the objectives of the study, the nature of the problem, the characteristics of respondents, and the type of data required. These tools help researchers gather reliable information, evaluate social welfare programmes, assess community needs, formulate policies, and improve professional social work practice. The interview is one of the most widely used tools in social work research. It involves direct interaction between the researcher and the respondent. Interviews may be structured, semi-structured, or unstructured depending on the flexibility required. Structured interviews use predetermined questions, while unstructured interviews allow respondents to express their experiences freely. Interviews are particularly useful for studying sensitive issues such as domestic violence, child abuse, substance abuse, mental health, and poverty, where personal interaction helps in obtaining detailed and meaningful information. The questionnaire is another important tool used for collecting data from a large number of respondents. It consists of a set of written questions that respondents answer independently. Questionnaires may include open-ended or close-ended questions and are commonly used in surveys. They are economical, save time, allow anonymity, and facilitate statistical analysis. They are useful in studying public