The Calochortoideae are a subfamily of monocotyledon perennial, herbaceous and mainly bulbous flowering plants in the lily family, Liliaceae.

[1] They are found predominantly in the temperate regions of the Northern Hemisphere, particularly East Asia and North America.

The two genera comprise about 90 species but the situation remains uncertain as to whether both should be included.

Originally Calochortus and Tricyrtis were considered to be sister clades and placed together in the subfamily Calochortoideae.

Further study has not confirmed this and it has been proposed that Tricyrtis be placed in a separate subfamily.