8. Griselda Blanco
One of the worst, most feared, biggest gangsters in the world turns out to be a woman named Griselda Blanco. Griselda Blanco was also known as The Cocaine Godmother, and she was responsible for cocaine trade in Miami. Previously a prostitute and a pickpocket, she began her journey as one of the biggest female gangsters very early. Sentenced to 10 years in prison, Griselda had no troubles continuing her cocaine business from there.
