January 6
- The Walking Dead star Norman Reedus will be 48
- Mr. Bean actor Rowan Atkinson is turning 62
- TV show host Julie Chen is 47
- Fantastic Beasts and Where to Find Them star Eddie Redmayne celebrates 35
- Saturday Night Live cast member Kate McKinnon turns 33
- Football player Jameis Winston is 23
- Chef Ree Drummond will be 48
- Mad Max: Fury Road star Courtney Eaton celebrates 21
- Composer A.R. Rahman is turning 50
- Football player Ndamukong Suh is 30
- Journalist Nigella Lawson turns 57
- Singer Sharon Cuneta will be 51
January 7
- The Walking Dead star Lauren Cohan celebrates 35
- Actor Nicolas Cage turns 53
- Black Veil Brides guitarist Jinxx is 31
- Avengers star Jeremy Renner will be 46
- Singer Aloe Blacc is turning 38
- Agents of SHIELD actor Brett Dalton turns 35
- Wrestler Alisha Inacio celebrates 30
- Black-ish star Marcus Scribner will be 17
- Neighbours star Oympia Valance is 24
- Baseball player Edwin Encarnación is turning 34
- TV show host Katie Couric celebrates 60
- Football player Michael Sam turns 27
- Singer Kenny Loggins will be 69
January 8
- Scientist Stephen Hawking celebrates 75
- Supernatural star Genevieve Padalecki will be 36
- The First Family star Khylin Rhambo is turning 21
- Singer Shirley Bassey celebrates 80
- Fashion designer Carolina Herrera turns 78
- Singer Jenny Lewis will be 41
- Football player Jack Brewer is turning 38
- Continuum star Rachel Nichols is 37
- Five Finger Death Punch drummer Jeremy Spencer turns 44
- Actress-novelist Amber Benson celebrates 40
- Field of Dreams star Gaby Hoffmann will be 35
January 9
- The Vampire Diaries star Nina Dobrev is turning 28
- Catherine, Duchess of Cambridge will be 35
- Rapper Sean Paul is 44
- Actress-composer Lauryn McClain celebrates 20
- Guitarist Jimmy Page is turning 73
- Justice League star J.K. Simmons will be 62
- The Fosters star Ashley Argota turns 24
- Dave Matthews Band singer Dave Matthews celebrates 50
- Basketball player Muggsy Bogues is turning 52
- Power star Omari Hardwick will be 43
- Singer Crystal Gayle turns 66
- Backstreet Boys singer A.J. McLean is turning 39
- Rapper Angie Martinez is 46
- Director Farah Khan will be 52
- Harry Potter star Imelda Staunton turns 61
January 10
- Singer Kaitlyn Maher is turning 13
- Singer Rod Stewart will be 72
- Wrestler Tamina Snuka turns 39
- Ask God for Forgiveness… Not Me star Zuria Vega is 28
- Kriss Kross rapper Chris Smith is turning 38
- Singer Pat Benatar will be 64
- Shinedown singer Brent Smith is 39
- Person of Interest star Sarah Shahi turns 37
- Boxer George Foreman will be 68
- Swimmer Conor Dwyer is turning 28
- Twilight star Alex Meraz is 32
January 11
- Singer Cody Simpson celebrates 20
- Singer Mary J. Blige is turning 46
- Soccer player Emile Heskey turns 39
- Singer Nadia Turner will be 40
- TV show host Rachel Riley is 31
- Singer Hyolyn is turning 26
- Identity star Amanda Peet turns 45
- How to Get Away with Murder star Aja Naomi King is 32
- Living Single star Kim Coles celebrates 55
January 12
- Singer Zayn Malik turns 24
- Glee star Naya Rivera celebrates 30
- Radio host Howard Stern will be 63
- Singer Do Kyungsoo is 24
- Singer-director Rob Zombie is turning 52
- Lucifer star Rachael Harris turns 49
- Baseball player Bobby Crosby will be 37
- Hockey player Claude Giroux is 29
- Spice Girls singer Melanie Chisholm turns 43
- Actress Kirstie Alley will be 66
- On the Job star Piolo Pascual is turning 40
- Basketball player Dominique Wilkins is 57
- Singer Amerie turns 37