Iolaus maritimus, the coastal sapphire, is a butterfly in the family Lycaenidae.

It is found in Kenya and Tanzania.

[2] The habitat consists of coastal and subcoastal forests.

The larvae feed on Erianthemum schelei, Phragmanthera usuiensis sigensis, Oedina pendens and Oedina congdoniana.

This Theclinae-related article is a stub.