Kylie Jenner's father is Caitlyn Jenner, formerly known as Bruce Jenner. He is a former Olympic gold medalist and reality television personality.
Caitlyn Jenner was married to Kris Jenner from 1991 to 2015. During their marriage, they had two children together: Kylie and Kendall Jenner. Caitlyn also has children from previous marriages, making Kylie Jenner one of several half-siblings.
Caitlyn Jenner came out as transgender in 2015 and has been an advocate for the transgender community ever since. Kylie Jenner has spoken publicly about her relationship with her father and has expressed her support for him and his transition.