Kagh was a male Klingon in the 23rd century. He was a member of the House of Kahnrah, the cousin of Kahnrah.

In 2267 Commander Kagh was the CO of the Klingon scout vessel IKS Vortha. That year the Vortha was assigned to patrol the Klingon Empire's more distant territories along the disputed Federation border. During it's patrol the Vortha detected the USS Enterprise on it's way to Organia; Assuming Starfleet intended to establish a beachhead within Klingon territory Kagh immediately had the ship's logs transmitted to the High Council and set an intercept course. The Vortha achieved direct hits in its opening attack on the Enterprise, but was outgunned by forty percent and could not survive when the Enterprise fired back. As his officers warned of their impending doom Kagh simply intoned that "Today is a good day to die".

In 2293 Kahnrah consulted Commander Kagh's logs of the incident to help him decide on how to vote in regards to the proposed opening of peace talks with the Federation. (TOS - Klingons: Blood Will Tell comic: "Against Their Nature")