Tetrablemmidae, sometimes called armored spiders, is a family of tropical araneomorph spiders first described by Octavius Pickard-Cambridge in 1873.

[1] It contains 126 described species in 29 genera from southeast Asia, with a few that occur in Africa and Central and South America.

[4] Most species have been collected from litter and soil, including that of epiphytes.

Some live in caves and show typical adaptations of cave spiders, such as loss of eyes and weak sclerotization.

As of April 2019[update], the World Spider Catalog accepts the following genera:[2]