Aleksander Čeferin will stand for an unprecedented fourth and final term as UEFA president next April 22 in Astana, Kazakhstan, UEFA confirmed on Thursday.
The Slovenian, who was first elected in 2016, told national association bosses during a meeting in Berlin on Thursday that he intended to seek reelection.
"I want to thank the national associations for their trust," Čeferin said in a statement. "We have faced extraordinary challenges over the past years, and we have faced them as one team.
"There is still important work ahead, and I have therefore accepted their request. My ambition remains the same: to keep European football united, make our game stronger and leave UEFA ready for the next generation."
Čeferin had already ruled himself out of standing for the FIFA presidency against Gianni Infantino, but a further four years of Čeferin arguably brings certainty and unity to UEFA at a time when it is focused on robustly challenging the FIFA presidency of Infantino.
Čeferin is only able to stand again after controversial changes were made to presidential term limits in UEFA's statutes at its 2024 Congress in Paris.
The Football Association opposed those changes, but after the alterations were voted through Čeferin said he would not be standing again in any case, saying he had made up his mind six months previously to step away when his third term ends in 2027.
However, he has now told delegates he will seek reelection through to 2031 at next year's UEFA Congress in Astana, Kazakhstan.
Čeferin has been vocal in his opposition to Infantino after it emerged in July the Swiss was working on a plan to seek private investment in a company to manage the commercial interests of FIFA's tournaments, including the men's and women's World Cups.
On Thursday, UEFA issued a statement calling for FIFA reform.
"The national associations reiterated that they have lost confidence in the current FIFA leadership," the statement said. "Institutional reform will not, on its own, be enough.
"FIFA also needs new leadership: a respected and unifying figure, deeply rooted in football, with the vision and experience to lead, the ability to command confidence across regions and an unequivocal commitment to development, reform, integrity and independence."
UEFA said it had lost confidence in Infantino over his handling of that plan and announced in August it would seek to identify a credible alternative to stand against him.
UEFA's call for FIFA reform on Thursday formally requests that FIFA change to include institutional governance, including a separation of powers, stronger ethics and audits and FIFA Forward funding as a protected member association entitlement.
There had been speculation in September that Thursday's meeting in Berlin could be the point at which UEFA coalesced around a candidate, but that has not materialised. The deadline for candidates to be submitted for the FIFA presidency is Nov. 18, and UEFA sources have indicated a confidence that a candidate will be identified by then.
On Wednesday, former Tottenham defender Ramon Vega became the first person to officially announce their intention to challenge Infantino.
Infantino, who has also been in post since 2016, still appears to be a formidable opponent, with a strong power base particularly in Africa and South America but also among many Middle East nations, including Qatar and Saudi Arabia.
The president of the Asian Football Confederation (AFC), Sheikh Salman bin Ibrahim Al Khalifa, also appears to have softened his stance towards Infantino in a letter seen by the Press Association.
Sheikh Salman has previously joined Čeferin and Victor Montagliani, the president of Concacaf, in calling on Infantino to step down. However, his new letter suggests the creation of an internal working group to examine potential FIFA governance reforms.
Europe's 55 count for more than a quarter of FIFA's 211 member federations who can vote in the election on March 18 in Rabat, Morocco.
Information from PA and The Associated Press was used in this report.