Mark Lenard (1924-1996) was an American film and television actor, best known for playing Sarek in the Star Trek: The Original Series episode "Journey to Babel", in the films Star Trek III: The Search for Spock, Star Trek IV: The Voyage Home and Star Trek VI: The Undiscovered Country and in the Star Trek: The Next Generation episodes "Sarek" and "Unification". Lenard also voiced the character in the Star Trek animated series episode "Yesteryear" and in a seven-minute in-universe interview with Gene Roddenberry for the audiobook Inside Star Trek.
In 1994, Lenard narrated the audiobooks of the novels Federation and Sarek. A year before his death, Lenard wrote the Star Trek: Deep Space Nine Malibu comic "Blood and Honor", which featured Keras' son Jannek taking revenge on Jamie Samantha Kirk, a descendant of James T. Kirk. Lenard also narrated the Star Trek Omnipedia.