Here are the key developments in the divisive election drama:
Voters turn out in large numbers on August 8 after a tight race between Kenyatta and Raila Odinga, his longtime rival.
Many fear a repeat of the violence that left more than 1,100 people dead in the 2007 election.
Early results gave Kenyatta a comfortable lead but were immediately rejected by Odinga, who claims hackers broke into the electoral commission database and manipulated the results.
A fresh election was held on October 26, with Kenyatta winning 98 percent of the votes, even as Odinga’s call for a boycott was adhered to.
Kenyatta hails his crushing win as vindication of his August victory. Odinga meanwhile says Kenya is moving towards “outright dictatorship”.
On November 20, the Supreme Court dismissed two petitions to overturn the October election, upholding the result.
On Tuesday, crowds poured into a Nairobi stadium for Kenyatta’s swearing-in ceremony.
Opposition supporters attempted to hold a rally for the more than 50 killed in four months of upheaval, but were met by volleys of tear gas and running battles with police.