The Micropezidae are a moderate-sized family of acalyptrate muscoid flies in the insect order Diptera, comprising about 500 species in about 50 genera and five subfamilies worldwide, (except New Zealand and Macquarie Island).

Insects in this family are commonly called stilt-legged flies, after their characteristically long legs.

[1] For terms see Morphology of Diptera Very slender, small to large (3–16 mm) flies, they have long, thin legs and narrow wings.

Larvae of certain Mimegralla species have been found to live in the roots of ginger and other plants, under the bark of dead trees, or in other decaying material.

Species of Micropeza have phytophagous larvae feeding in the root nodules of leguminous plants in open habitats.

Adults are either predatory on small insects (for example Calobata in Britain[1]) or are attracted to excrement or decaying fruit.

Adults are found on low herbage, flowers, leaves, rotting fruit, and excrement.