Bradoriida, also called bradoriids, are an extinct order of small marine arthropods with a bivalved carapace, which globally distributed, forming a significant portion of the Cambrian and Early Ordovician soft-bodied communities.

Preserved soft tissues known from some members, such as Kunmingella, Kunyangella and Indiana suggest that the group was morphologically diverse.

[3] In Kunmingella, eggs have been found preserved attached to the posteriormost three pairs of biramous limbs, suggesting it engaged in brood care.

[3] Bradoriids are proposed to have been detritus feeders, scavengers, or micro predators of soft-bodied prey.

[1] Their taxonomic composition broadly reflects two geographical provinces ("European" and "4A", i.e. America, Asia, Australia, Antarctica) which approximately mirror trilobite provinces, with the 4A area representing warmer waters closer to the palaeo equator.