A Mission burrito is a type of burrito that first became popular during the 1960s in the Mission District of San Francisco, California. It is distinguished from other burritos by its large size and inclusion of rice and other ingredients. A key method to the burritos' construction is to steam the wheat flour tortilla to increase its flexibility prior to adding the other ingredients, although that is not a requirement and burritos may be grilled instead. It has been referred to as one of three major styles of burritos in the United States, following the earlier, simple burrito consisting of beans, rice, and meat. It precedes the California burrito, which was developed in the 1980s in San Diego and contains carne asada, cheese and French-fried potatoes.

A burrito in Mexico is, historically, a regional name, among others, for what is known as a taco, a tortilla filled with food, in other parts of the country. The term burrito was regional, specifically from Guanajuato, Guerrero, Michoacán, San Luis Potosí and Sinaloa, for what is known as a taco in Mexico City and surrounding areas, and codzito in Yucatán and Quintana Roo. Due to the cultural influence of Mexico City, the term taco became the default, and the meaning of terms like burrito and codzito were forgotten, leading many people to create new meanings and folk histories. In modern times, it is considered by many as a different dish in Mexican and Tex-Mex cuisine that took form in Ciudad Juárez, consisting of a flour tortilla wrapped into a sealed cylindrical shape around various ingredients. In Central and Southern Mexico, burritos are still considered tacos, and are known as “tacos de harina”. The tortilla is sometimes lightly grilled or steamed to soften it, make it more pliable, and allow it to adhere to itself. Burritos are often eaten by hand, as their tight wrapping keeps the ingredients together. Burritos can also be served "wet", i.e., covered in a savory and spicy sauce, when they would be eaten with a fork and knife.