The Lampyrinae are a large subfamily of fireflies (Lampyridae).

The exact delimitation, and the internal systematics, have until recently been a matter of debate; for long this group was used as a "wastebin taxon" to hold any fireflies with insufficiently resolved relationships.

Regardless, they are very diverse even as a good monophyletic group, containing flashing and continuous-glow fireflies from the Holarctic and some tropical forms as well.

The ancestral Lampyrinae probably had no or very primitive light signals; in any case several modern lineages appear to have returned to the pheromone communication of their ancestors independently.

[1] The group has recently been examined using molecular phylogenetics, using fairly comprehensive sampling.