Benthamiella is a genus of plants in the family Solanaceae, native to Patagonia in southern South America.

The flowers are typical of those of the Solanaceae (nightshade family), being tubular with five free lobes at the end.

The name commemorates George Bentham, whose great work (with Joseph Dalton Hooker), Genera Plantarum, setting out the "Bentham & Hooker system", was completed in that year.

[3] As of April 2015[update], The Plant List accepts the following species:[4] The genus is found only in Patagonia, split between Argentina and Chile, with the most species (nine) being found in the Argentine province of Santa Cruz.

[3] As of 2015[update], four species were in cultivation: B. azorella, B. longifolia, B. nordenskioldii and B. patagonica.