The Diocese of Brooklyn is adding a float featuring Mother Cabrini to the Columbus Day Parade — a jab at Mayor Bill de Blasio and first lady Chirlane McCray for snubbing the Italian American icon and saint in a recent statue competition.

“We’re a little upset that Mother Cabrini wasn’t included for a statue dedication,” the Diocese’s Monsignor Jamie Gigantiello told The Post. “If the city won’t honor Mother Cabrini, we will will honor her.”

The snub of Saint Frances Cabrini has riled up Big Apple Italian Americans and Catholics, who point out that Cabrini finished first in a citywide vote to determine which women of note should be honored with statues to be erected throughout the five boroughs.

However, a group controlled by McCray passed over Cabrini in favor of seven other women.

Now she will be front and center at Manhattan’s Columbus Day Parade, with her float replacing one that typically promotes Catholic education.

It will be two or three car-lengths long and include 40 to 50 kids and adults — with more walking alongside it.

Gigantiello said Cabrini, known for her work in poor Italian neighborhoods in Brooklyn and elsewhere, founded dozens of institutions that included orphanages and hospitals.

The monsignor said that, despite being disappointed with City Hall for the snub, the Catholic Foundation has raised $25,000 to erect its own statue of Cabrini at Brooklyn Borough Hall — with the blessing of borough president and mayoral candidate Eric Adams.

Last Sunday, more than 1,000 parishioners packed Sacred Heart of Jesus and Mary & Stephen church in Brooklyn in a show of support for a Cabrini monument.

Bronx-born actor Chazz Palminteri went so far as to call McCray “racist” over the snub, as six of the women chosen are Hispanic or black.