Teak, a valuable timber tree native to tropical forests of southeastern Asia. The wood is among the most durable known. Teak trees grow to a height of 80 to 150 feet (24 to 46 m). The trees bear leaves 8 to 12 inches (20 to 30 cm) long and small white or bluish flowers. Teakwood is hard and strong and does not easily crack or warp. It contains a resinous oil that makes it resistant to decay and termites. Teakwood is golden-yellow when first cut, but darkens into brown as it seasons. It is used for building ships and boats, for flooring, and for making furniture. Most commercial teakwood is obtained from Burma and Thailand.

Teak is Tectona grandis of the verbena family, Verbenaceae.