K
- Khloé Kardashian – socialite and reality-television personality
- Kim Kardashian – socialite and reality-television personality
- Kourtney Kardashian – socialite and reality-television personality
- Colin Kaepernick – NFL quarterback San Francisco 49ers
- Ryan Kalish – major league baseball outfielder
- Tony Kanal – bassist with No Doubt
- Gabe Kapler – major league baseball outfielder
- Chris Kattan – actor, comedian
- Julie Kavner – actress
- Diane Keaton – actress, director, producer
- Anthony Kennedy – Associate Justice of the Supreme Court of the United States
- Kirk Kerkorian – investor and philanthropist
- Jason Kidd – NBA player
- Val Kilmer – actor
- Billie Jean King – tennis player
- Regina King – actress
- Kerry King – guitarist (Slayer)
- Maxine Hong Kingston – author
- Matthew Knight – actor
- B.G. Knocc Out – rapper
- Nathan Kress – actor (iCarly)
- Mike Krukow – baseball pitcher and announcer (San Francisco Giants)
- Lisa Kudrow – actress (Friends)
- Michelle Kwan – figure skater
Read more about this topic: List Of People From California