Three children were injured in two fires Wednesday night, authorities said.

An infant was rescued from a 7:30 p.m. blaze at 8796 19th Ave. in Bath Beach, Brooklyn, sources said. He was in stable condition.

About 30 minutes later, a four-alarm fire tore through eight homes on 90th Street in Woodhaven, Queens, leaving two kids and three adults with minor injuries.

Seven firefighters also suffered minor injuries in the Queens fire.