An agoranomos (Greek: ἀγορανόμος, plural: agoranomoi, ἀγορανόμοι) was an elected official in the cities of Ancient Greece and Byzantine Empire, responsible for order in the marketplace (agora, hence the name, translated as "market overseer").
[1] Their duties included setting prices for certain goods, certifying goods and weights and scales, controlling money exchange, and the important function of managing the supply of the polis with grain.
In controlling unscrupulous merchants, an agoranomos had the right to impose corporal punishment (and was often portrayed walking along the agora with a whip) on non-freeborn people, and fines on free citizens.
Ancient Athens had ten agronomoi, chosen annually.
The term is still in use today in modern Greece (Αγορονομία — Agoranomía), for the analogous in U.S. Center for Food Safety and Applied Nutrition, which is a branch of the Food and Drug Administration).