Tibetan Empire had nine high ministers in court. The highest one was gung lön chen po (lön chen for short), which could be translated into English as "Chief Minister" or "Prime minister".
The first Lönchen was appointed during Detrul Namshungtsen's reign. It was abolished before the Era of Fragmentation.
Here is a complete list of Lönchen according to The Old Tibetan Chronicle (P.T. 1287).
| Name | Tibetan script | Term of office | Note | |
|---|---|---|---|---|
| during Detrul Namshungtsen's reign | ||||
| during Namri Songtsen's reign | Plot rebellion, captured and executed | |||
| during Songtsen Gampo's reign | Plot rebellion, forced to commit suicide | |||
| during Songtsen Gampo's reign | ||||
| during Songtsen Gampo's reign | Plot rebellion, forced to commit suicide | |||
| 652—659 | ||||
| 659—661 | Plot rebellion, captured and executed | |||
| 661—667 | ||||
| 667 | acting | |||
| 667—685 | ||||
| 685—698 | Plot rebellion, forced to commit suicide | |||
| vacant | ||||
| 705 | Plot rebellion, captured and executed | |||
| 705—721 | ||||
| 721—725 | ||||
| 725—727 | ||||
| 727—728 | executed | |||
| 728—747? | ||||
| 747?—754? | he murdered Me Agtsom, and was captured and executed | |||
| 757—763 | ||||
| 768—782? | ||||
| 782? | ||||
| 782?—783 | ||||
| 783—796 | ||||
| 796—800 | ||||
| 800—810 | ||||
| 810—836 | ||||
| 836—842 | executed | |||