A mek'leth was a hand held Klingon bladed weapon, used since the 23rd century.

It was described as "a two-pronged dagger" that was "typically used to slash the throat or disembowel." It could also be thrown effectively. When facing an opponent wielding a bat'leth, a skilled mek'leth user could use the reverse prong to snag the center of the bat'leth and snap it in half.