Three men were shot — one fatally — in two separate broad-daylight shootings in the Big Apple on Monday, authorities said.

A 33-year-old man was shot in the head on the grounds of NYCHA’s Ingersoll Houses in Fort Greene, around 11:10 a.m., cops said.

He was taken to the Brooklyn Hospital Center, where he was later pronounced dead, police said.

Another man, 21, brought himself to the same hospital with a gunshot wound to the left hand. He was listed in stable condition.

Police could not immediately confirm whether either man was targeted.

No arrests have been made.

Hours earlier, around 8:20 a.m., a man was shot twice in the right foot and once in the left leg at East 156th Street and Westchester Avenue in the Melrose section of The Bronx, authorities said.

He was taken to Lincoln Medical Center by private means, with non-life-threatening injuries.

No one was arrested, cops said.