Asterocheres lilljeborgi is a species of copepod in the family Asterocheridae.

It is found in the British Isles and Scandinavia where it is a semi-parasite of starfish.

First described as Asterocheres lilljeborgi in 1859 by the Norwegian marine biologist Jonas Axel Boeck,[1] it is the type species of the genus.

[2] The species is found in west and south Norway, south-western Sweden, the Skagerrak, the North Sea, around the coasts of England and northern France as well as the Davis Strait, the Aleutian Islands and Alaska.

[1] Asterocheres lilljeborgi is associated with starfish, such as the bloody Henry starfish (Henricia oculata) or the blood star (Henricia sanguinolenta).