The gunfire erupted at around 12:30 a.m. on the 300 block of Chestnut Street in Pleasantville.
Police tell Action News more than a hundred people were at the barbeque when an argument broke out. Someone pulled out a gun and started shooting.
Three people were rushed to Atlanticare Regional Medical Center in Atlantic City.
Pleasantville police called in help from other departments to handle the distraught party-goers. Authorities tell us the barbecue is an annual event hosted by one of the neighbors.