Police are searching for two women in connection to a mass shooting at a Brooklyn block party this summer that left one man dead and 11 others wounded, police said Wednesday.

The women, both wearing all black clothing, were captured on cellphone video before the gunplay kicked off at the Old Timer’s Day block party in Mendoza Park in Brownsville on July 27, cops said.

They’re “persons of interest” in the shooting — and police are hoping to speak with them about what they might know about the shooters, a law-enforcement source said.

The NYPD is offering a reward of $10,000 for information that leads to the arrest and conviction of the shooters.

Investigators believe a gang beef touched off the shooting that killed 38-year-old Jason Pagan, a reputed Bloods member who was on parole for gun possession when he was gunned down, law-enforcement sources said at the time.

In addition to Pagan, 11 other people were wounded in the gunfire, including a man and a woman who were both hit in the head, police said.

One survivor of the shooting escaped with just a graze wound because her bra strap stopped the slug, her relatives told The Post after the shooting.

“When the EMS unhooked her bra, the bullet was just sitting in the bra strap and it just fell out,” Odessa Watson said of her 21-year-old daughter, Daniesa Murdaugh, at the time.

“It got caught in there,” Watson added. “It was a regular bra. The threading of it, because we’re thick girls, is thicker. And it got caught in the back part of the bra.”