agora [Gr.,=market], in ancient Greece, the public square or marketplace of a city. In early Greek history the agora was primarily used as a place for public assembly; later it functioned mainly as a center of commerce. Usually in a readily accessible part of the city, it was often surrounded by the public buildings, such as the royal palace, the law courts, the assembly house, and the jail. A favorite architectural device was the colonnade surrounding the agora. One of the highest honors was to be granted a tomb in the agora. The agora was similar to the Roman forum.

In ancient Greek cities, an open space serving as an assembly area and backdrop for commercial, civic, social, and religious activities. Use of the agora varied in different periods. Located in the middle of the city or near the harbor, it was often enclosed by public buildings, colonnades containing shops, and stoas for protection from sun and bad weather. The highest honor for a citizen was to be granted a tomb in the agora.

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