One woman was shot and three other people were slashed or stabbed in Big Apple mayhem overnight, police said.

In the shooting incident, a woman in her 20s was struck in the thigh during an argument with two men on Light Street, near Pratt Avenue in the Bronx around 12:40 a.m. Saturday, police said.

The women was taken to Jacobi Medical Center in stable condition, cops said. The suspects ran off. There have been no arrests.

In Manhattan, a man was stabbed in the shoulder during a fight on East 14th Street, near Second Avenue at 4:30 a.m. Saturday, cops said.

The victim, 20, was taken to Bellevue Hospital in stable condition. Another man, who tried to play peacemaker, was slashed in the hand for his efforts. He declined medical attention, authorities said. The knife-wielding assailant ran off.

In a separate incident in Brooklyn, a woman was slashed in the lower back by another woman in Prospect Park, near West Drive at about 7:30 p.m. Friday, authorities said. The victim, 19, was brought to New York-Presbyterian Brooklyn Methodist Hospital in stable condition, cops said. Her assailant ran away, police said.