Umm Kaltuum bint Muxamed (ingiriis: Umm Kulthum bint Muhammad; carabi: ﺃﻡ ﻛﻠﺜﻮﻡ ﺑﻨﺖ ﻣﺤﻣﺪ, ""Umm Kalthum bint Muxamed"") ku dhalatey magaalada Makka waa gabadha sadexaad ee ugu wayn caruurta Nebi Muxamed taasi ooy dhashay xaaskii nebiga Khaddiija bint Khuwaylid.