Kareem Abdul-Jabbar -- Ferdinand Lewis Alcindor, Jr.
Edie Adams -- Elizabeth Edith Enke
Joey Adams -- Joseph Abramowitz
Nick Adams -- Nicholas Adamshock
Eddie Albert -- Edward Albert Heimberger
Alan Alda -- Alphonso d?Abruzzo
Muhammad Ali -- Cassius Marcellus Clay, Jr.
Woody Allen -- Allen Stewart Konigsberg
Greg Allman -- Gregory Lenoir
June Allyson -- Ella Geisman
Don Ameche -- Dominic Felix Amici
Julie Andrews -- Julia Elizabeth Wells
Eve Arden -- Eunice Quedens
R.G. Armstrong -- Robert Golden Armstrong
Bea Arthur -- Bernice Frankel
Fred Astaire -- Frederick Austerlitz
Chet Atkins -- Chester B. Atkins
Vivian Austin -- Vivian Coe
Frankie Avalon -- Francis Thomas Avalonne
Candice Azzara -- Matilda Azzara
Babyface -- Kenneth Brian Edmonds
Henny Backus -- Henriette Kaye
Lauren Bacall -- Betty Joan Perske
Kaye Ballard -- Catherine Gloria Balotta
Anne Bancroft -- Anna Maria Louisa Italiano
Binnie Barnes -- Gertrude Barnes
Rona Barrett -- Rona Burstein
Gene Barry -- Eugene Klass
John Barrymore -- John Blythe
Billy Barty -- William John Bertanzetta
Jamie Lyn Bauer -- Norma Marvhne Bauer
Orson Bean -- Dallas Frederick Burrows
Marilyn Beck -- Marilyn Mohr
Louie Bellson -- Luigi Balassone
Pat Benatar -- Patricia Andrzejewski
Johnny Bench -- Johnny Lee
Tony Bennett -- Antonio Dominic Benedetto
Jack Benny -- Benjamin Kubeisky
Shelley Berman -- Sheldon Berman
Milton Berle -- Milton Berlinger
Irving Berlin -- Israel Baline
Billie Bird -- Bird B. Stowell
Joey Bishop -- Joseph Abraham Gottlieb
Amanda Blake -- Beverly Louise Neill
Robert Blake -- Michael Gubitosi
Sonny Bono -- Salvatore Phillip Bono
Shirley Booth -- Thelma Booth Ford
Big Bopper -- Jiles Perry Richardson
Ernest Borgnine -- Ermes Effron Borgnino
Tom Bosley -- Thomas Edward Bosley
David Bowie -- David Robert Hayward-Jones
Bart Braverman -- Bartley Louis Braverman
Peter Breck -- Joseph Peter Breck
Morgan Brittany -- Suzanne Cupito
Charles Bronson -- Charles Bunchinsky
Albert Brooks -- Albert Einstein
Mel Brooks -- Melvin Kaminsky
Dr. Joyce Brothers -- Joyce Diane Bauer
Don Budge -- John Donald Budge
George Burns -- Nathan Brinbaum
Richard Burton -- Richard Jenkins
Red Buttons -- Aaron Chwatt
Sid Caesar -- Sidney Caesar
Nicholas Cage -- Nicholas Coppola
Michael Caine -- Maurice J. Micklewhite
Rory Calhoun -- Francis Timony Durgin
Dyan Cannon -- Samile Diane Friesen
Truman Capote -- Truman Streckfus Persons
Kate Capshaw -- Kathy Sue Nail
David Carradine -- John Arthur Carradine
Diahann Carroll -- Carol Diahann Johnson
Lewis Carroll -- Charles Lutwidge Dodgson
Jack Carter -- Jack Chakrin
Billy Casper -- William Earl Casper
Hopalong Cassidy -- William Lawrence Boyd
JoAnn Castle -- Jo Ann Zering
Lita Grey Chaplin -- Lillita Louise McMurray
Ray Charles -- Ray Charles Robinson
Chevy Chase -- Cornelius Crane Chase
Chubby Checker -- Ernest Evans
Cher -- Cherilyn Sarkisian
Liden Chiles -- Truman Linden Chiles
Eric Clapton -- Eric Clapp
Candy Clark -- Candace June Clark
Robert Clary -- Robert Widerman
Andrew Dice Clay -- Andrew Silverstein
Patsy Cline -- Virginia Patterson Hensley
Lee J. Cobb -- Lee Jacob
Claudette Colbert -- Lily Chauchoin
Nat King Cole -- Nathaniel Adams Coles
Perry Como -- Pierino Roland Como
Jeff Conaway -- Jeffery Charles William Michael
Carol Connors -- Annette Kleinbard
Chuck Connors -- Kevin Joseph Connors
Mike Connors -- Krekor "Kirk" Ohanian
Robert Conrad -- Conrad Robert Falk
Alice Cooper -- Vincent Damon Furnier
Gary Cooper -- Frank James Cooper
Jackie Cooper -- John Cooper, Jr.
David Copperfield -- David Kotkin
Chick Corea -- Armando Anthony Corea
Elvis Costello -- Decian Patrick McManus
Lou Costello -- Louis Francis Cristillo
Buster Crabbe -- Clarence Linden Crabbe
Joan Crawford -- Lucille LeSueur
Bing Crosby -- Harry Lillis Crosby
Christopher Cross -- Christopher Geppert
Scatman Crothers -- Benjamin Sherman Crothers
I cheated..here's where I found them...
http://www.celebrityalmanac.com/realnames.html