The election, in which he took 89.6 per cent of the vote, according to the National Election Authority, was held as Egypt struggles with a slow-burning economic crisis and tries to manage the risk of spillover from the war adjacent to Egypt's Sinai Peninsula.
Many people in the Arab world's most populous country expressed indifference about the December 10-12 election, saying the result was a foregone conclusion.
The state and tightly controlled domestic media pushed hard to boost turnout, which the election authority said had reached 66.8 per cent - well above the 41 per cent recorded at the previous presidential election in 2018.
Some voters said the conflict had encouraged them to vote for Sisi, who has long presented himself as a bulwark of stability in a volatile region - an argument that has also proved effective with Gulf and Western allies providing financial support to his government.
President Abdel Fattah al-Sisi took 89.6 per cent of the vote. (AP PHOTO)
"Egyptians lined up to vote not just to choose their president for the next term, but to express their rejection of this inhumane war to the entire world," Sisi said in a speech soon after results were announced.
He described the war between Israel and Palestinian Islamist movement Hamas as Egypt's primary challenge.
Israel's heavy bombardment and invasion of the Gaza Strip, after a Hamas incursion into Israel, has flattened much of the enclave and left most of its people homeless.
Egypt has said it will not allow any cross-border exodus of Gazans.
The election featured three other candidates, none of them high profile.
The most prominent potential challenger halted his run in October, saying officials and thugs had targeted his supporters - accusations dismissed by the election authority.
The president said the war between Israel and Hamas was Egypt's primary challenge. (EPA PHOTO)
"There were no elections, Sisi used the entire state apparatus and security agencies to prevent any serious contender from even running," said Hossam Bahgat, head of the Egyptian Initiative for Personal Rights (EIPR), an independent group.
"Just like last time he hand-picked his opponents who only went through the motions of running against the president with either muted or almost no criticism of his disastrous policies."
Egypt's state media body said the vote was a step towards political pluralism and authorities have denied violations of electoral rules.
Sisi, a former general, has overseen a sweeping crackdown on dissent across the political spectrum since leading the 2013 overthrow of Egypt's first democratically elected leader, Mohamed Mursi of the Muslim Brotherhood.
He was elected to the presidency in 2014 and re-elected in 2018, both times with 97 per cent of the vote.
The constitution was amended in 2019, extending the presidential term to six years from four, and allowing Sisi to stand for a third term.
with Reuters
