An organisation in sociology refers to a large group of individuals who are structured and coordinated to achieve specific goals or purposes, involving a definite set of authority relations, rules, and procedures that govern their activities. Organisations can range from formal entities like corporations, government agencies, and educational institutions to more informal groups with shared objectives. They are characterised by a division of labor, a hierarchy of authority, and established patterns of communication and interaction among their members. Sociologists study organisations to understand their structure, culture, dynamics, and their role in shaping social life and achieving collective goals.