A man was fatally shot outside a Brooklyn nightclub early Saturday, police said.

The 23-year-old was shot in the head in front of Trendz Lounge on Ditmas Avenue, near East 89th Street, shortly before 4:30 a.m. and pronounced dead at Brookdale Hospital, cops said.

There have been no arrests, and the investigation remains ongoing, the NYPD said.

Bullets also flew in Harlem Friday night, where a 60-year-old man was shot in the back and a 29-year-old was shot in the leg shortly before 10:30 at 2026 7th Avenue, near West 121st St., cops said.

Both victims went to Harlem Hospital in stable condition, police said.

There have been no arrests.

In Queens, a man was shot in the ankle at 71-15 Beach Channel Drive in Far Rockaway around 6:50 a.m. Saturday, police said.

There have been no arrests.