Five months after dropping out of the race for mayor of New York City to focus on his mental health, Corey Johnson, the City Council speaker, said on Tuesday that he was considering a late entry into the city comptroller’s race.

Mr. Johnson said that he had been approached by several elected officials and City Council members who said he should consider running to be the city’s fiscal watchdog, and that his desire to contribute to its recovery from the pandemic spurred his interest.

“I wouldn’t be considering this if I didn’t feel good about where I am personally and the work I’ve done over the last six months in focusing on myself and my own well-being,” Mr. Johnson said in an interview.

Mr. Johnson had been one of the leading Democratic candidates in the mayor’s race, but he announced in September that he was dropping out because he said that dealing with his depression, handling his job as the leader of the City Council, and running for office would be too difficult.

Mr. Johnson said he would make a final decision on the comptroller’s race in the next two weeks, before petitioning is set to start. The current comptroller, Scott M. Stringer, is barred from seeking a third consecutive term, and is now a leading candidate in the race for mayor.

Mr. Johnson’s potential entry would add a level of star power to the contest. As Council speaker, he has developed a reputation as a civic booster, known for doing back flips and dancing at parades and professing his love for the city.

His willingness to share aspects of his personal life is part of his appeal. Mr. Johnson, who is gay, has kept his social media followers apprised of developments in his new relationship, and he has publicly discussed his status as a recovering addict and his H.I.V. diagnosis.

He also faced criticism over his response to last year’s Black Lives Matter protests, after the City Council fell short of meeting demands to cut $1 billion from the Police Department’s budget during negotiations with Mayor Bill de Blasio.

Mr. Johnson acknowledged that he was “disappointed” that the budget did not cut the $1 billion in police funds.

“I wanted us to go deeper,” he said.

New York City is facing a deep financial crisis as a result of the pandemic, and Mr. de Blasio has said the city might have to make major budget cuts if it does not receive significant federal funding. The mayor recently announced that property tax revenues could decline by $2.5 billion next year, driven by a drop in the value of empty office buildings and hotels.

If he joins the race, he will be able to use the money he raised in his campaign for mayor. He would also likely qualify to receive matching funds from the city, pending an audit. Mr. Johnson currently has about $580,000 in his campaign account, according to the city’s campaign finance board.

Mr. Johnson would be eligible to qualify for more than $4 million in public funds, the maximum amount available. The spending limit for the primary for those in the public financing program is $4.55 million.

“I wouldn’t have another dollar to raise,” he said.

Mr. Johnson, who is prevented from seeking a third consecutive term on the City Council because of term-limit laws, said he started to consider the idea of running for comptroller several weeks ago.

“I haven’t made a final decision yet — I have to continue to talk to my family, but I am considering it because I love this city,” Mr. Johnson said, adding that during the recovery, the next comptroller would have to ensure “that all the money we’re spending is spent appropriately, and I feel like I’ve done that as speaker.”

The field of candidates running for comptroller has expanded in recent weeks. As recently as a month ago, it was essentially a four-person contest between Brad Lander, a Brooklyn city councilman; Brian A. Benjamin, a state senator; David Weprin, a state assemblyman; and Kevin Parker, a state senator.

Then Zach Iscol, a military veteran, dropped out of the mayor’s race and joined the race for comptroller last month. Michelle Caruso-Cabrera, a former anchorwoman for CNBC, also joined the race.

Some of the other candidates have a head start on Mr. Johnson. Mr. Lander, for example, has already been endorsed by the New York chapter of the Working Families Party and Representatives Jerrold Nadler and Jamaal Bowman.

Still, the news of Mr. Johnson’s potential candidacy was received well by some Council members.

“I’m really happy as his friend that he’s doing better,” said Stephen Levin, a councilman from Brooklyn who has not made an endorsement in the comptroller’s race. “The Council is moving forward and we have a big agenda this year.”