Wheat (Genus: Triticum) is a cereal grain. People eat it most often in the form of bread. It is a kind of grass whose fruit is a "head of wheat" with edible seeds. It was first grown in the Levant, a region of the Near East. Now it is cultivated worldwide.

World trade in wheat is greater than for all other crops combined. Globally, wheat is the leading source of vegetable protein in human food. It has a higher protein content than other major cereals such as maize (corn) or rice. In terms of total production, it is second to rice as the main human food crop and ahead of maize (maize is used more for animal feeds). Almost 800,000,000 tonnes are harvested every year.