Culex globocoxitus is a species of mosquito in the genus Culex that is endemic to Australia. It is a member of the subgenus Culex and the C. pipiens species complex. It is known to breed in open swamps and brackish water, and has been collected in coastal south-west Western Australia. The species is active throughout the entire year, but peaks between July and November. Females generally do not bite humans, the host is most likely birds.