Nicotiana langsdorffii, Langsdorff's tobacco,[1] is a species of flowering plant in the nightshade family Solanaceae, native to Brazil.

It bears 2 in (5.1 cm) long, nodding, tubular bell-shaped flowers that are apple green in colour, with blue anthers.

[2] Like other species in the genus, N. langsdorffii can cause severe discomfort and irritation if consumed.

This plant has gained the Royal Horticultural Society's Award of Garden Merit.

[3][4] The species name langsdorffii is in honour of G. I. Langsdorff, who was the Russian Consul in Rio de Janeiro.