A shreni in ancient India was an organised association of traders, merchants, or artisans practising the same occupation. Each profession usually had its own shreni. These bodies regulated economic activities and professional interests and are often compared to guilds found in other historical societies. They performed multiple roles and functioned as democratic bodies, trade unions, courts, and centres of technology. They supported skilled workers, ensured quality control, regulated prices, sourced raw materials, and identified markets, creating an organised and supportive environment for production and trade.

They emerged in the early Buddhist period and flourished under the Mauryan empire. Their growth was supported by urban and rural specialisation, where artisans of the same craft lived together, often near sources of raw materials. They arose due to occupational localisation, hereditary professions, and accepted leadership under a jetthaka (leader or chief of a shreni). Expanding trade further strengthened them. Initially positioned between tribe and caste, shrenis later became more rigid and sometimes evolved into castes. Economic advantages, social prestige, and mutual support encouraged collective work. Over time, they became the dominant industrial institutions in their regions.

They were unique social innovations that promoted craft specialisation, quality control, justice, charity, social harmony, and protection from state oppression, functioning as some of the world’s earliest democratic institutions.