A market garden is the relatively small-scale production of fruits, vegetables and flowers as cash crops, frequently sold directly to consumers and restaurants. The diversity of crops grown on a small area of land, typically from under 0.40 hectares (4,000 m²; 1 acre) to some hectares (a few acres), or sometimes in greenhouses, distinguishes it from other types of farming. A market garden is sometimes called a truck farm.

A market garden is a business that provides a wide range and steady supply of fresh produce through the local growing season. Unlike large, industrial farms, which practice monoculture and mechanization, many different crops and varieties are grown and more manual labour and gardening techniques are used. The small output requires selling through such local fresh produce outlets as on-farm stands, farmers' markets, community-supported agriculture subscriptions, restaurants and independent produce stores. Market gardening and orchard farming are closely related to horticulture, which concerns the growing of fruits and vegetables.