Declaring himself a leader "for all Egyptians", Mursi who was proclaimed the winner of the first free presidential election, reached out to all those who had led the country's historic revolution, in indications that he may include his electoral rivals into his national government.
The presidential campaign had deeply polarised the country, pitting radicals, moderates and remnants of the former regime against each other, a year after the country rose in unison against the regime of Hosni Mubarak.
Mursi, 60, has his task cut out as he embarks on the process of bridging deep political divisions and negotiating the contours of the military's power, a task he began by appealing for unity in the country.
"I will treat all Egyptians the same and respect them equally," said Mursi, in his victory speech.
"I tell everybody in this memorable day that because of your choice, your will and after God's favour, I am a president for all Egyptians," the engineer-professor said on Egyptian television as tens of thousands celebrated his victory across the country.
As he replaces the 30-year iron fisted rule of Mubarak, Mursi has before him the challenge of consolidating power in the civilian administration and negotiating with the Army that looks reluctant to relax its grip on power.
Morsi, who as president, retains the right to appoint the prime minister and cabinet, has already begun talks to form a presidential team and cabinet that "would truly represent Egypt after the revolution," according to a statement on the Brotherhoods' Twitter account. (MORE)