UBarack Hussein Obama II (owazalwa ngomhla 4 kweyeThupha ngo 1961) wayengusopolitiki waseMelika kwaye waba ngumongameli wama-44 wase-United States ukusuka ngo-2009 ukuya kowama-2017. Wayengumongameli wokuqala wase-Afrika-waseMelika kwimbali yaseMelika, kwaye wayekhe waba seneta wase-US emele i-Illinois ukusuka ngo-2005 ukuya kowama-2008, nanjengesenenja yelizwe lase-Illinois ukusuka ngo-1997 ukuya kowama-2004.

U-Obama wazalelwa eHonolulu, eHawaii. Waphumelela kwiYunivesithi yaseColumbia ngo-1983 ngesidanga kwisayensi yezopolitiko. Emva koko, waba ngumququzeleli woluntu eChicago. Ngo-1988, wabhalisa kwiHarvard Law School kwaye waba ngumongameli wokuqala omnyama weHarvard Law Review. Wasebenza njengelungelo lamalungelo oluntu kwaye wafundisa umthetho womgaqo-siseko kwiYunivesithi yaseChicago ukusuka kwi-1992 ukuya kwi-2004. Wayemele isithili se-13 kwi-Senate yase-Illinois ukusuka ngo-1997 ukuya ngo-2004, emva koko waphumelela kwiSenate yase-US. Ngo-2008, waphumelela kunyulo lukamongameli lweDemocratic Party kwaye wakhetha uJoe Biden njengelungu lakhe, besoyisa uJohn McCain noSarah Palin.

Njengomongameli, u-Obama wajongana nentlekele yezemali ngo-2007-2008, wenza iphakheji yokuvuselela uqoqosho, wakwandisa ukuncitshiswa kwerhafu, waphumeza umthetho wokhathalelo lwezempilo, kwaye wamisela umthetho wokuziqhelanisa kwezemali. Wayalela ukugqogqa okwabulala u-Osama bin Laden kwaye waphelisa umkhosi wase-US e-Iraq. U-Obama wamisela iijaji uSonia Sotomayor no-Elena Kagan kwiNkundla ePhakamileyo, kwaye wayalela ukubandakanyeka emkhosini eLibya, eqhuba ekubhukuqweni kukaMuammar Gaddafi.