Leioproctus carinatifrons is a species of Australian bee. It is found in coastal regions of New South Wales, Victoria and South Australia, and feeds on the nectar of various species of Persoonia.[1] It was first described in 1929 by T. D. A. Cockerell as Paracolletes carinatifrons.[1] Males are around long, and females 7mm.[2] It is closely related to L. perpolitus from Western Australia