The jackfruit, jakfruit or nangka (Artocarpus heterophyllus) is a species of tree in the fig, mulberry, and breadfruit family (Moraceae).

The jackfruit is the largest tree fruit, reaching as much as 55 kg (120 pounds) in weight, 90 cm (35 inches) in length, and 50 cm (20 inches) in diameter. A mature jackfruit tree produces some 200 fruits per year, with older trees bearing up to 500 fruits in a year. The jackfruit is a multiple fruit composed of hundreds to thousands of individual flowers; the fleshy petals of the unripe fruit are eaten by humans, in addition to the ripened fruit.

The jackfruit tree is well-suited to tropical lowlands and is widely cultivated throughout tropical regions of the world, particularly from South Asia to Southeast Asia and Oceania.

Its ripe fruit can be sweet depending on grown variety, which is commonly used in desserts. Canned green jackfruit has a mild taste and meat-like texture that lends itself to being called "vegetable meat". Jackfruit is commonly used in South and Southeast Asian cuisines. Both ripe and unripe fruits are consumed. It is available internationally, canned or frozen, and in chilled meals, as are various products derived from the fruit, such as noodles and chips.

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