Authors Born on January 1
- Arthur L. Herman Historian, 1956
- Artur Rodzinski Conductor, 1892
- Arvind Krishna Chief Executive Officer, 1962
- Ashley Kahn Historian, 1960
- Austin Scarlett Fashion Designer, 1977
- Avinash Kaushik Author, 1953
- Ayman Odeh Lawyer, 1975
- Azazel Jacobs Film Director, 1972
- B. J. Fogg Author, 1950
- Babette March Model, 1941
- Barbara Demick Journalist, 2000
- Barbara Goldsmith Philanthropist, 1937
- Barry Bergdoll Art Historian, 1955
- Barry McGee Painter, 1966
- Bartholomew Apostol, 100
- Ben Chasny Guitarist, 1953
- Ben Domenech Writer, 1982
- Ben Huh Entrepreneur, 1979
- Bernard Haisch Astrophysicist, 2000
- Bernard Looney Businessman, 1970
- Bernard Schubert Screenwriter, 1895
- Bernard von NotHaus Creator, 1901
- Betsy Ross Tailor, 1752
- Bill Lipschutz Founder, 1956
- Bill Mallonee Singer-Songwriter, 1955
- Bill Maris Entrepreneur, 1975
- Bill Taylor Businessman, 1922
- Blake Butler Writer, 1979
- Bob Kersee Coach, 1953
- Bob Menendez Politician, 1954
- Bob Mondello Film Critic, 1953
- Brad Furman Music Director, 2000
- Bria Skonberg Trumpeter, 1983
- Brian Kernighan Scientist, 1942
- Brian Stelfreeze Artist, 2000
- Brody Dalle Singer-Songwriter, 1979
- Bryan Ward-Perkins Historian, 1953
- Burton Silverman Painter, 1928
- Caio Fonseca Painter, 1959
- Callum McDougall Director, 2000