B
- Max Baer, Jr. – actor (Jethro Bodine of The Beverly Hillbillies)
- Ross Bagdasarian, Sr. – actor (Alvin and the Chipmunks)
- Diane Baker – actress (The Silence of the Lambs)
- Dusty Baker – manager of the Cincinnati Reds
- Tyra Banks – model and actress (The Fresh Prince of Bel-Air)
- Adrienne Barbeau – actress (Maude)
- Travis Barker – Blink-182
- Matt Barnes – National Basketball Association player
- Drew Barrymore – actress (50 First Dates)
- Summer Bartholomew – Miss USA 1975
- Michael Bay – director
- Amanda Beard – Olympic swimmer
- Beck – musician
- Captain Beefheart – musician
- Tory Belleci – filmmaker and model maker (MythBusters)
- Marcus Benjamin (born 1857) – early biographer at the Smithsonian Institution
- Candice Bergen – actress (Murphy Brown)
- Carolyn Beug – passenger aboard American Airlines Flight 11
- Thora Birch – actress
- Bradford Bishop – indicted murderer and at-large fugitive
- Bill Bixby – actor (The Incredible Hulk)
- Mel Blanc – cartoon voice actor
- Jack Black – actor (Tenacious D)
- Hank Blalock – baseball player (Texas Rangers)
- Andy Bloom – Olympic shot putter
- Betsy Bloomingdale – socialite
- David Blu (born David Bluthenthal) – professional basketball player (Maccabi Tel Aviv)
- Jonathan Blum – hockey player
- C-Bo – rapper
- Aaron Boone – baseball player (Cleveland Indians)
- Barry Bonds – baseball player (San Francisco Giants)
- Bobby Bonds – baseball player (San Francisco Giants)
- Barry Bostwick – actor (Spin City, The Rocky Horror Picture Show)
- Bruce Bowen – National Basketball Association player (San Antonio Spurs)
- Tom Brady – football quarterback (New England Patriots)
- Benjamin Bratt – actor
- Ryan Braun – baseball player (Milwaukee Brewers)
- Nicholas Brendon – actor (Buffy the Vampire Slayer)
- Jan Brewer – Governor of Arizona
- Stephen Breyer – Associate Justice of the Supreme Court of the United States
- Beau Bridges – actor (The Fabulous Baker Boys)
- Jeff Bridges – actor (The Big Lebowski)
- Lloyd Bridges – actor (Sea Hunt, Airplane!)
- Adam Brody – actor (The O.C.)
- Albert Brooks – actor and director (Lost in America)
- Josh Brolin – actor (No Country For Old Men)
- Alton Brown – television host
- Jerry Brown – Governor of California (1975–1983; 2011–present), Mayor of Oakland, California
- Pat Brown – Governor of California (1959–1967)
- Willie Brown – 58th Speaker of the California State Assembly, Mayor of San Francisco
- Lindsey Buckingham – musician (Fleetwood Mac)
- Bill Buckner – baseball player
- Don Budge – tennis player
- Hunter Burgan – bass player for AFI
- Cruz Bustamante – Lieutenant Governor of California
- Kari Byron – artist and television personality (MythBusters)
Read more about this topic: List Of People From California