The jackfruit (Artocarpus heterophyllus), also known as jack tree, jakfruit, or sometimes simply jack or jak is a species of tree in the mulberry and fig family (Moraceae).

It is native to parts of South and Southeast Asia, and is believed to have originated in the southwestern rain forests of Indian Subcontinent, in present-day Goa, Kerala, Odisha, Tamil Nadu, Sri Lanka coastal Karnataka, and Maharashtra. The jackfruit tree is well suited to tropical lowlands, and its fruit is the largest tree-borne fruit, reaching as much as 35 kg (80 lb) in weight, 90 cm (35 in) in length, and 50 cm (20 in) in diameter. The Jackfruit tree can produce about 100 to 200 fruits in a year. The jackfruit is composed of hundreds to thousands of individual flowers, and it is the fleshy petals that are eaten.