Mary, formerly named Merv, Meru and Alexandria Margiana, is a city on an oasis in the Karakum Desert in Turkmenistan, located on the Murgab River. It is the capital city of Mary Region. In 2010, Mary had a population of 126,000, up from 92,000 in the 1989 census. The ruins of the ancient city of Merv are located near the city.