Aharon Garushovich Galstyan (Russian: Агарон Гарушович Галстян; born 1970), known as The Taxi Driver Poisoner (Russian: Таксист-отравитель), is an Armenian-born Russian serial killer and thief. Operating in St. Petersburg, he would drug his passengers with Azaleptin (sleeping medicine containing clonazepam) and rob them of their valuables, and in seven cases, his victims died, their bodies discarded near bodies of water. Despite his insistence on his innocence, Galstyan was found guilty and sentenced to life imprisonment with no chance of parole.