The Tsomo River copper or Tsomo River opal (Chrysoritis lyncurium) is a species of butterfly in the family Lycaenidae.

It is endemic to South Africa, where it is found from the northern Eastern Cape to southern KwaZulu-Natal.

Adults are on wing from December to January.

[2] The larvae feed on Myrsine and Diospyros species.

They are attended to by Crematogaster ants.