Rubuta ci gaba don wannan sakin layi - Kwanaki 100 na farko na shugabancin Barack Obama ya fara ne a ranar 20 ga Janairu, 2009, ranar da aka rantsar da Barack Obama
a matsayin shugaban Amurka na 44. Kwanaki 100 na farko na wa'adin shugabancin ya sami muhimmancin alama a lokacin Franklin D. Roosevelt na farko a ofishin, kuma ana daukar lokacin a matsayin ma'auni don auna nasarar nasarar shugaban kasa. Rana ta 100 na shugabancinsa ita ce 29 ga Afrilu, 2009. Obama ya bayyana cewa bai kamata a yi masa hukunci ba kawai ta kwanaki ɗari na farko: "Kwanaki ɗari na farko za su kasance masu mahimmanci, amma mai yiwuwa zai zama kwanaki dubu na farko da ke haifar da bambanci".