Kiaeria is a genus of chasmataspidid, a group of extinct aquatic arthropods.
It was originally classified as a xiphosuran of the monotypic family Kiaeriidae.
However, in 2019, the British geologist and paleobiologist James C. Lamsdell assigned the genus to the order Chasmataspidida, possibly being a member of the family Chasmataspididae.
Only one species has been assigned to this genus, K.
This prehistoric arthropod–related article is a stub.