Grits are a type of porridge made from boiled cornmeal. Hominy grits are a type of grits made from hominy – corn that has been treated with an alkali in a process called nixtamalization, with the pericarp (ovary wall) removed. Grits are often served with flavorings as a breakfast dish. Grits can be savory or sweet, with savory seasonings being more common. Grits are similar to other thick maize-based porridges from around the world, such as polenta and mieliepap. The dish originated in the Southern United States but is now available nationwide. Grits are often part of a dinner entrée shrimp and grits, served primarily in the South.

The word "grits" is derived from the Old English word grytt, meaning "coarse meal." In the Charleston, South Carolina, area, cooked hominy grits were primarily referred to as "hominy" until the 1980s.