The Kliever Citation was a commendation awarded by Starfleet in the 24th century.
Alfonse Pacelli received the Kliever Citation on stardate 40107.0 for his service in systems design. (TNG: "Eye of the Beholder")
An okudagram readout of Pacelli's personnel file mentioning the Kliever Citation was displayed on a viewscreen that Deanna Troi was studying. Some of the facts could be called into question since she was involved in a very detailed hallucination when the data was shown.