Guilds in medieval Europe were associations of craftsmen, merchants, or other skilled workers that emerged across Europe to regulate trade, maintain standards, and protect the economic and social interests of their members. These organizations developed into influential institutions that shaped urban economies, oversaw apprenticeships and professional conduct, and often held significant political authority within their towns. Guilds varied widely—from powerful merchant guilds to specialized craft guilds—and their legacy can still be seen today in surviving traditions, historical buildings, and the organizational models that influenced modern trade regulation and professional associations.
There were several types of guilds, including the two main categories of merchant guilds and craft guilds but also the frith guild and religious guild. Guilds arose beginning in the High Middle Ages as craftsmen united to protect their common interests.