Nicotiana acuminata is a species of wild tobacco known by the English common name manyflower tobacco. It is native to Argentina and Chile but it is known on other continents, including North America and Australia, as an introduced species.

It is an annual herb exceeding a meter in maximum height. The leaf blades may be 25 centimeters long and are borne on petioles. The inflorescence bears several white or green-tinged flowers with tubular throats up to 4 centimeters long, their bases enclosed in green-striped sepals.