Mamaya na Iraki, daga 2003 zuwa 2011 ya fara da mamayewar da Amurka ta jagoranta a watan Maris na 2003. Mamaya na da nufin wargaza gwamnatin Saddam Hussein, bisa hujjar kawar da makaman kare dangi (WMDs), wadanda ba a taba samun su ba.Kamfen na soja cikin gaggawa ya haifar da rugujewar gwamnatin Ba'ath.Bayan faduwar Saddam Hussein an kafa hukumar wucin gadi ta hadin gwiwa (CPA) karkashin jagorancin Amurka don gudanar da mulkin kasar Iraki.Paul Bremer, a matsayinsa na shugaban CPA, ya taka muhimmiyar rawa a matakin farko na mamayar, inda ya aiwatar da manufofi kamar wargaza sojojin Iraki da kuma kawar da Ba'ath na al'ummar Iraki.Wadannan yanke shawara sun yi tasiri na dogon lokaci kan kwanciyar hankali da tsaron Iraki.Zaman mamayar ya ga bullar kungiyoyin 'yan tada kayar baya, da tashe-tashen hankula na kabilanci, da kuma tsawaita yakin da ya shafi al'ummar Iraki.Tawagar dai ta kasance da kungiyoyi iri-iri da suka hada da tsoffin Ba'ath, masu kishin Islama, da mayaka na kasashen waje, lamarin da ya haifar da sarkakiyar yanayin tsaro.A shekara ta 2004, an mayar da mulkin mallaka a hukumance ga gwamnatin rikon kwarya ta Iraqi.Duk da haka, kasancewar sojojin kasashen waje, galibin sojojin Amurka, ya ci gaba.A lokacin dai an gudanar da zabuka masu muhimmanci da dama, ciki har da zaben 'yan majalisar rikon kwarya a watan Janairun shekara ta 2005, da zaben raba gardama na kundin tsarin mulkin kasar a watan Oktoban shekarar 2005, da zaben 'yan majalisar dokoki na farko a watan Disamba na shekara ta 2005, wanda ke nuna matakan kafa tsarin dimokuradiyya a Iraki.Halin da ake ciki a kasar Iraki ya kara dagulewa sakamakon kasantuwar da ayyukan kungiyoyin 'yan bindiga daban-daban, wadanda galibi ta hanyar bangaranci.Wannan zamanin ya sami gagarumin asarar rayuka da ƙauracewa fararen hula, wanda ya haifar da damuwar jin kai.An samu karuwar sojojin Amurka a shekara ta 2007, karkashin shugaba George W.Bush, daga baya kuma shugaba Barack Obama ya ci gaba, da nufin rage tashe-tashen hankula da karfafa ikon gwamnatin Iraki.Wannan dabarar ta samu wasu nasarori wajen rage yawan tashe-tashen hankula da fadace-fadacen kabilanci.Yarjejeniyar zaman lafiyar Amurka da Iraki da aka rattaba hannu a shekarar 2008, ta tsara tsarin janye sojojin Amurka daga Iraki.A watan Disambar 2011, Amurka ta kawo karshen zaman soji a Iraki a hukumance, wanda ke nuna karshen lokacin mamayar.Duk da haka, abubuwan da suka faru na mamayewa da mamaya sun ci gaba da yin tasiri a fagen siyasa, zamantakewa, da tattalin arziki na Iraki, wanda ya kafa matakan fuskantar kalubale da rikice-rikice a yankin.