January 13
- Hunger Games star Liam Hemsworth is turning 27
- Writer-producer Shonda Rhimes will be 47
- Pirates of the Caribbean star Orlando Bloom celebrates 40
- Stranger Things star Natalia Dyer turns 20
- Grey’s Anatomy star Patrick Dempsey will be 51
- Actress Julia Louis-Dreyfus is 56
- Football player Doug Martin is turning 28
- Ant-Man actor Michael Peña turns 41
- Baywatch star Nicole Eggert will be 45
- Singer Lee Seung-gi is 30
- Blade: The Series star Jill Wagner is turning 38
January 14
- The Flash star Grant Gustin turns 27
- Gymnast Kacy Catanzaro will be 27
- Rapper-actor-TV show host LL Cool J is 49
- Foo Fighters singer Dave Grohl is turning 48
- Singer Frankie Sandford turns 28
- Actor Jason Bateman will be 48
- Corpse Bride voice actress Emily Watson celebrates 50
- Rocky star Carl Weathers is turning 69
- Rapper Slick Rick turns 52
- Actress Faye Dunaway will be 76
- Two and a Half Men star Holland Taylor is turning 74
- Kings of Leon singer Caleb Followill celebrates 35
- Football player Hakeem Nicks is 29
- Shameless star Emma Greenwell turns 28
January 15
- Rapper Pitbull will be 36
- Singer Grace VanderWaal celebrates 13
- DJ Skrillex is turning 29
- Wrestler Kelly Kelly turns 30
- Football player Drew Brees is 38
- American Crime star Regina King will be 46
- Rapper Young Dro is turning 37
- Baseball player Matt Holliday turns 37
- Tool guitarist Adam Jones will be 52
- Fashion designer Rachel Roy is 43
- The Hard Times of RJ Berger star Chris Warren turns 27
- Little People voice actress Sanai Victoria will be 10
January 16
- Hamilton actor Lin-Manuel Miranda is turning 37
- TV show host James May will be 54
- Football player Joe Flacco turns 32
- Singer FKA Twigs is turning 29
- Baseball player Albert Pujols is 37
- A Different World star Debbie Allen will be 67
- Singer Sade turns 58
- Boxer Roy Jones Jr. is turning 48
- Director John Carpenter will be 69
- Pitch Perfect 2 star Birgitte Hjort Sørensen is 35
- Hockey player Matt Duchene turns 26
- American Horror Story actor Richard T. Jones celebrates 45
- Charles in Charge star Josie Davis will be 44
January 17
- First Lady Michelle Obama is turning 53
- Actress Betty White celebrates 95
- Actor James Earl Jones turns 86
- Actor-comedian Jim Carrey will be 55
- Comedian Steve Harvey celebrates 60
- New Girl star Zooey Deschanel is turning 37
- Basketball player Dwyane Wade is 35
- Rapper-actor Ray J turns 36
- Rapper Lil Jon will be 46
- Singer Kid Rock is turning 46
- Scream: The TV Series star Willa Fitzgerald turns 26
- Kaiser Chiefs singer Ricky Wilson is 39
- Sand Angels star Cassie Brennan will be 16
January 18
- Last Man Standing star Sarah Gilman celebrates 21
- Guardians of the Galaxy star Dave Bautista will be 48
- Actor-writer Jason Segel is 37
- Rapper Estelle is turning 37
- Actor Kevin Costner turns 62
- Singer Jason Gray celebrates 45
- Backstage star Romy Weltman turns 17
- Singer Betsy-Blue English will be 21
- Korn singer Jonathan Davis is turning 46
- The Flash star Jesse L. Martin turns 48
- Football player Julius Peppers is 37
January 19
- Fuller House star Jodie Sweetin celebrates 35
- Singer Dolly Parton turns 71
- Perks of Being a Wallflower star Logan Lerman is 25
- Gymnast Shawn Johnson will be 25
- Rapper Lil Scrappy is turning 33
- Zoey 101 star Erin Sanders turns 26
- Wrestler Ron Killings celebrates 45
- Actor-comedian Shawn Wayans will be 46
- Sons of Anarchy star Katey Sagal is turning 63
- Basketball player JaVale McGee is 29
- Comedian Paul Rodriguez will be 62
- Singer Lindee Link turns 22