Abu Bakr ( Larabci: أبو بكر‎) sahabi ne, ɗaya daga cikin sahabban Muhammadu kuma halifan Musulunci na farko . Shi ma surukin Muhammad ne ta hanyar A’isha . Sunan sa na ainihi shine Abdullah ko Abul-Kaaba kuma Abubakar shine kunyarsa. Sunan, ma'ana "Uban ƙaramin raƙumi" (Abu ma'ana 'Uba na' kuma Bakr ma'anar 'ƙaramin raƙumi'), Musulman Sunni suna amfani da shi sosai. Sauran fassarar sun hada da Abu Bakar, Abu Bekr, Ebubekir, Aboubacar Abubakar,da dai sauransu.Ana iya rubuta bangarorin biyu na sunan tare, a sanyaya su,ko kuma daban. Mutanen da ke da sunan sun hada da: Abdullah bn Abi Bakr (ya mutu a shekara ta 633), dan khalifa Abubakar. Muhammad bn Abubakar (ya mutu 658), dan khalifa Abubakar. Abu Bakr bn Ali (ya mutu a shekara ta 680 a yakin Karbala). Abu Bakr bn Hasan bn Ali (ya mutu a shekara ta 680 a yakin Karbala). Abu Bakr bn Muhammad bn Hazm (ya mutu a shekara ta 737), malamin addinin Musulunci mai bin mazhabar Madina.