Bayarjargal (Bayara) Agvaantseren (born 1969) is a Mongolian conservationist who has campaigned to save the habitat of the snow leopard in an area of the South Gobi Desert which has become a major mining hub.
Thanks to her successful efforts to create the 8163-sq-km Tost Tosonbumba Nature Reserve and to have the authorities cancel 37 mining licences, in 2019 she was awarded the Goldman Environmental Prize.