Eucalyptus albopurpurea, commonly known as the purple-flowered mallee box, Port Lincoln mallee, or the Coffin Bay mallee, is a mallee with fibrous grey-brown bark. It is endemic to South Australia with distribution limited to coastal areas on Kangaroo Island and the southern tip of the Eyre Peninsula in the vicinity of Coffin Bay. White, pink or purple flowers appear between March and October. E. albopurpurea was previously considered a subspecies of E. lansdowneana however is now considered most closely related to E. odorata.