President Donald Trump will hold a bill-signing ceremony Friday for a new law guaranteeing financial support to 9/11 first responders and other victims of the terrorist attacks, sources said Wednesday.

John Feal, a first responder and longtime advocate for the legislation, said he provided the names to the White House of 38 people to invite to the ceremony.

Among the invited guests will be the families of the bill’s three namesakes: James Zadroga, Ray Pfeifer and Luis Alvarez. All died after breathing toxic contaminants at Ground Zero.

“We are glad the president is signing it quickly,” Feal told The Post.

The Senate on Tuesday passed “The Never Forget the Heroes Act,” which extends funding for 9/11 responders, other victims and their families through 2092.

The House passed the measure on July 12.

Activist Jon Stewart was also in contact with the White House, but he left for vacation and will be unavailable for the bill-signing ceremony Friday, said Feal, of the FealGood Foundation.

“I wish I could take the whole 9/11 community with me to the White House, because they deserve it,” Feal said.

The bill-signing is a culmination of years-long work by Feal and other first responders who traveled to DC numerous times to urge Congress to provide a permanent source of funding for 9/11 victims.

“We won our respect and our dignity and we get to go out the way we wanted to,” Feal said. “I’m all right with that.”

The White House did not immediately comment.