Authors born in 1940
- Cary Cooper Psychologist, 1940
- Catherine D. DeAngelis Pediatrician, 1940
- Chana Bloch Poet, 1940
- Charles E. Blake Bishop, 1940
- Charles Koppelman Musician, 1940
- Chip Taylor Composer, 1940
- Chris Menges Cinematographer, 1940
- Chuck Close Painter, 1940
- Chuck Mangione Trumpeter, 1940
- Chuck Norris Actor, 1940
- Clark Blaise Author, 1940
- Cliff Richard Singer, 1940
- Clive Sinclair Entrepreneur, 1940
- Cynthia Weil Songwriter, 1940
- Dan Birdwell American Football Player, 1940
- Daniel Goldin Engineer, 1940
- Daniel J. Sullivan Film Director, 1940
- Dario Argento Film Director, 1940
- Dave Chambers Ice Hockey Coach, 1940
- Dave DeBusschere Baseball Player, 1940
- Dave Hickey Art Critic, 1940
- David Brudnoy Radio Personality, 1940
- David Budbill Poet, 1940
- David Gates Singer-Songwriter, 1940
- David H. Koch Businessman, 1940
- David Hope Bishop, 1940
- David Jason Actor, 1940
- David Kay Political Commentator, 1940
- David McFadden Poet, 1940
- David Peoples Screenwriter, 1940
- David Pilbeam Professor, 1940
- David Price Professor, 1940
- David Rabe Playwright, 1940
- David Richo Psychotherapist, 1940
- David Sainsbury, Baron Sainsbury of Turville Politician, 1940
- David Seltzer Screenwriter, 1940
- David W. Johnson Psychologist, 1940
- Deanna Dunagan Actress, 1940
- Delbert McClinton Singer-Songwriter, 1940
- Delwar Hossain Sayeedi Speaker, 1940