Ctenocolletes albomarginatus is a species of bee in the family Stenotritidae. The species is endemic to Australia. It was described in 1965 by American entomologist Charles Duncan Michener.
The body length of males is 14âÂÂ16 mm; that of females 18âÂÂ19 mm.
The species occurs in southern Western Australia. The holotype was collected six miles north of Watheroo in the Wheatbelt region.
The adults are solitary, flying mellivores; the larvae are sedentary.