There’s nothing these millennials think they can’t do — even run for mayor of New York City.

A trio of thirty-somethings — Michael Basch, Mike Tolkin and Josh Thompson — all want a shot at toppling Bill de Blasio, 55, in this year’s election.

A fourth, Queens Republican City Councilman Eric Ulrich, 32, is exploring a mayoral bid and even has a film crew following him.

They would not earn the title as youngest mayor in city history — that belongs to Hugh J. Grant who was inaugurated at age 30 in 1889.

The budding politicos know each other and have close mutual friends.

“We’re frenemies,” said Basch, 32. “We all understand we need to expand the electorate. That is everyone’s intentions and we’re all buds.”

Born in California, Basch moved to New York after getting his MBA at the age of 24. A Clinton campaign vet and president of an advertising technology company, he calls himself a “futurist” candidate.

He hopes to modernize the workforce by retraining workers whose jobs could be lost to computers and robots, and hire young techies.

“It would be great to turn Gracie Mansion into an incubation center and get bunk beds and sandwiches for hungry young people looking to completely reinvent the city,” he said.

Basch calls de Blasio a great mayor — for the 20th century.

“Traditional politicians with a ton of experience look at the way things have always been and try to make them better,” he said. “We need to look at where things are going and figure out how we can get there.”

Tolkin, 32, shares Basch’s worries that jobs in many sectors could become obsolete in the next 20 years.

He grew up in Long Island, went to the University of Pennsylvania, and created an indoor spin class using IMAX screens as CEO of IMAX labs.

Tolkin doesn’t call himself a politician and doesn’t believe that age is a qualification for the city’s top job. He promises he will recruit a team of executives to join him in City Hall and bring about “radical change.”

“It’s not that the mayor has the wrong ideas it’s that he’s failed to implement broad long-term solutions that I think are going to solve the problems that we face,” he said. “We can’t be thinking small anymore.”

Thompson also says he’s “unimpressed” with the de Blasio administration. The 31-year-old education consultant has worked in city government in Newark, Washington D.C., and Bridgeport, CT, and has raised $182,000 for his bid.

He chastised the mayor for letting homelessness grow, opposing charter schools, and trying to raise his national profile.

“He’s cutting ribbons, celebrating test scores going up 2 percent and commenting on Donald Trump right now,” Thompson said. “We’re a data-driven generation and these lack of results don’t add up.”

Thompson’s experience with homelessness is personal, often moving after six months for several years at a time up and down the east coast.

He called de Blasio’s homelessness policies, which emphasize adding beds from hotels and getting shelters up to code, shortsighted.

“If you’re growing up in a family with decades of bad decisions or bad luck, that’ s not going to turn around in six months,” he said. “This whole policy of putting people into hotels is not attacking the root causes.”

Older, more well-known candidates may be waiting for de Blasio’s corruption investigations to wrap up before making their decisions to run. But the three Gen-Y guys aren’t waiting.

“I don’t care about an indictment. I could care less,” said Thompson. “If we don’t run, your option is just Bill de Blasio.”