Dzogchen Dé Sum

Dzogchen Dé Sum can either refer to:

• the three categories (Tib. སྡེ་གསུམ་, de sum; Wyl. sde gsum) of Dzogchen teachings, or to
• one of Chokgyur Lingpa's termas, entitled the 'Three Classes of the Great Perfection' which he retrieved from the Lotus Crystal Cave.