Mung bean, also known as green bean, mung, moong, mash bean, munggo or monggo, green gram, golden gram, and green soy, is the seed of Vigna radiata which is native to Pakistan and India. The split bean is known as moong dal, which is green with the husk, and yellow when dehusked. The beans are small, ovoid in shape, and green in color. The English word "mung" derives from the Hindi moong.

They are generally eaten either whole (with or without skins) or as bean sprouts, or used to make the dessert "green bean soup". The starch of mung beans is also extracted from them to make jellies and "transparent/cellophane" noodles. In Vietnam, the transparent wrapping of Vietnamese spring rolls is made from mung bean flour. In Filipino cuisine, meat is sauteed with garlic, onions, and bay leaves, then mung beans are added and cooked. Mung batter is used to make crepes named Pesarattu in Andhra Pradesh, India.

Whole mung beans are generally prepared from dried beans by boiling until they are soft. In Chinese cuisine, whole mung beans are used to make a tong sui, or dessert, otherwise literally translated, "sugar water", called lǜdòu tāng sui, which is served either warm or chilled, and is considered an antidote to thirst.[citation needed] In Indonesia, they are made into a popular dessert snack called es kacang hijau, which has the consistency of a porridge. The beans are cooked with sugar, coconut milk, and a little ginger. Although whole mung beans are also occasionally used in Indian cuisine, beans without skins are more commonly used; but in Kerala, whole moong dal (cheru payaru) is commonly boiled to make a dry preparation that is often had with rice gruel (kanji). In the Philippines, it is the main ingredient of the dessert hopiang munggo.