What is the name of Spock's father?

Spock’s father is Sarek, the Vulcan ambassador and astrophysicist in Star Trek. Sarek is married to Amanda Grayson, a human, making Spock half-Vulcan and half-human.

Sarek first appeared in the original-series episode “Journey to Babel,” which aired in 1967. The story introduced him as a dignified diplomat attending a Federation conference, while also revealing the tension between father and son. Sarek wanted Spock to attend the Vulcan Science Academy, but Spock chose Starfleet instead, leading to an 18-year estrangement.

The other options are related names, which makes the question easy to confuse. T’Pau is a Vulcan leader associated with “Amok Time,” Surak is the ancient founder of Vulcan logic, and Sybok is Spock’s older half-brother. Sarek’s relationship with Spock develops across later films and series, especially when they reconcile after personal and family crises.