Stenomesson is a genus of bulbous plants in the family Amaryllidaceae.

All the species are native to western South America (Colombia, Ecuador, Peru and northern Chile).

[3][4][5][6][7][8] The generic name Stenomesson references the floral morphology.

It is composed of the Greek words stenos, meaning narrow, and meso, meaning "in the middle".

[9] As of August 2023[update], Plants of the World Online accepted the following species:[2] Numerous names have been coined using the name Stenomesson referring to species now regarded as better suited to other genera (Clinanthus, Eucrosia, Ismene and Urceolina).