Star Trek invented Klingon language for the fictional species of the same name.
The Klingon language ( tlhIngan Hol , [ ˈt͡ɬɪ.ŋɑn χol ] , in pIqaD ) is the constructed language spoken by the fictional Klingons in the Star Trek universe . Star Trek . The series has its own full-fledged constructed language , Klingon .