Cryptolasma is a genus of harvestmen in the family Nemastomatidae with two described species (as of 2023).

[1][2][3] Both species are found in the Central eastern region of Mexico in Veracruz state.

[1][4][5] The genus Cryptolasma was described by Cruz-López, Cruz-Bonilla & Francke, 2018,[6] with the type species Cryptolasma aberrante Cruz-López, Cruz-Bonilla & Francke, 2018.

The genus is said to be easily recognized from other ortholasmatines by a unique character combination.

The generic name is a combination of the prefix crypto- from the Greek kryptós meaning hidden or secret, with -lasma, a common suffix of the subfamily; in reference to the peculiar cryptic habits.