Tachymarptis is a genus of bird in the swift family, Apodidae.

It contains the Alpine swift (Tachymarptis melba) of Eurasia and Africa and the mottled swift (Tachymarptis aequatorialis) of Africa.

[2] They are often included in the genus Apus but they are larger than other members of that genus, their nestlings have a different foot structure and they host different species of feather lice.

[2] The species placed in Tachymarptis are not deeply nested inside Apus[3] but represent a monophyletic sister lineage to this genus, in order that they can either be regarded as a distinct genus or lumped into a genus Apus with a broader definition.

The name Tachymarptis comes from Greek takhus ("fast") and marptis ("seizer").