ANSWER:Generally no. They are beneficial because they clean up the place. There are some species that can injure and even kill. Fire ants in the southern United States swarm and sting multiple times per ant and yes, it feels like fire. The army ant can devastate insect and small animal populations in a forest by swarming in the billions. A bullet ant has one of he most painful stings. And there is an ant in Australia that can kill you with one sting. I will have to look up the name of it.

It's called the Jack Jumper ant.