List of Klingon blade weapons.
Klingons also kept the Jem'Hadar polearm, called a Kar'takin, aboard their ships for training purposes during the Dominion War. (DS9: "Sons and Daughters")
Named
Unnamed
Klingon chancellor's knife
This knife was used by the Klingon chancellor to threaten Captain Jonathan Archer when he visited Qo'noS in April 2151. (ENT: "Broken Bow")
Assassins's knife #1
A Klingon warrior used this knife in an attempt on Captain Jean-Luc Picard's life in 2366. (TNG: "Sins of the Father")
Assassins's knife #2
Another Klingon warrior used this knife in an attempt on Captain Jean-Luc Picard's life in 2366. (TNG: "Sins of the Father")
Worf's trophy weapon
Worf kept two of these knives in his quarters aboard the USS Enterprise-D. (TNG: "Reunion", "Night Terrors")
Bat'leth-like weapon
Kurn had this bat'leth-like weapon hanging in his office aboard the IKS Hegh'ta underneath two crossed yans. (TNG: "Redemption")
In 2368, Worf also kept one of the weapons on display in his quarters aboard the USS Enterprise-D. (TNG: "Cost of Living")
Hegh'bat ceremony knife
This knife is used in the Hegh'bat ceremony. Worf tried to kill himself with this knife in 2367 (TNG: "Night Terrors") and nearly talked his son Alexander into killing him with such a knife when Worf was unable to move. (TNG: "Ethics") The Knife of Kirom is a similar-looking knife. (TNG: "Rightful Heir")
House of Duras knife
A knife carried by members of the House of Duras. (TNG: "Firstborn")
Klingon food knife
Koloth used this small Klingon knife to cut a piece of cake in half. (DS9: "Blood Oath") When Kurn came aboard Deep Space 9 in 2372, he wielded a similar knife. (DS9: "Sons of Mogh")
Klingon large knife
When going through the Kal'Hyah ritual, Worf held this knife. (DS9: "You Are Cordially Invited")