Star Trek Expanded Universe

Task Force K was a Starfleet task force extant in the early 23rd century.

In the late 2220s, Admiral Luther Whitetree commanded Task Force K aboard the Baton Rouge-class USS Glasgow. Consisting of Glasgow and four Mann-class starships, the task force met IKV Fencer at the Federation-Klingon border. (TOS novel: The Final Reflection)