Ganden Monastery or Ganden Namgyeling or Monastery of Gahlden is one of the `great three` Gelug university monasteries of Tibet. It is in Dagzê County, Lhasa. The other two are Sera Monastery and Drepung Monastery. Ganden Monastery was founded in 1409 by Je Tsongkhapa Lozang-dragpa, founder of the Gelug order.