Klingon

The Klingon language was written by Dr. Marc Okrand, originally for Star Trek III: The Search for Spock . Dr. Okrand published The Klingon Dictionary in 1985, and a 2nd edition in 1991. Since the original publication, there has been a thriving community of Klingon speakers, of which I am a member.

The Klingon Language Institute is a great source for information about the Klingon language.