The Klingon Chain of Office was a ceremonial, silver-colored, metallic, Klingon necklace worn by the Chancellor of the Klingon High Council.

In 2293, the Klingon Chain of Office was occasionally worn by Klingon Chancellor Gorkon. After he was assassinated later that year, it was inherited by his daughter, Azetbur. (Star Trek VI: The Undiscovered Country)

This piece of jewellery is not named on screen. Its designation as the Klingon Chain of Office comes from the reference book Star Trek: Costumes: Five Decades of Fashion from the Final Frontier (p. 101), and was coined by Maggie Schpak. Though Dodie Shepard was the costume designer for Star Trek VI, she asked Schpak to design the necklace. "We researched a number of actual Chain of Office pieces," recalled Schpak, "from the Vatican, the British monarchy, and others. My partner [Tom Browne] did a drawing that Dodie approved, and then he sculpted it. It incorporated some alternating Klingon symbols – characters – that Bob Fletcher had shown us when he was working on the earlier movies. The big drop on the chain has a head with a masklike face set above two Klingon beasts. It's made of cast metal with chromed plating." (Star Trek: Costumes: Five Decades of Fashion from the Final Frontier, p. 101) Browne received no on-screen credit for designing and sculpting the necklace.