Street food is food sold by a hawker or vendor on a street or at another public place, such as a market, fair, or park. It is often sold from a portable food booth, food cart, or food truck and is meant for immediate consumption. Some street foods are regional, but many have spread beyond their regions of origin. Most street foods are classified as both finger food and fast food and are typically cheaper than restaurant meals. The types of street food vary between regions and cultures in different countries around the world. According to a 2007 study from the Food and Agriculture Organization, 2.5 billion people eat street food every day. While some cultures consider it to be rude to walk on the street while eating, a majority of middle- to high-income consumers rely on the quick access and cheap service of street food for daily nutrition and job opportunities, especially in developing countries.

A hawker is a vendor of merchandise that can be easily transported; the term is roughly synonymous with costermonger or peddler. In most places where the term is used, a hawker sells inexpensive goods, handicrafts, or food items. Whether stationary or mobile, hawkers often advertise by loud street cries or chants, and conduct banter with customers, to attract attention and enhance sales.