[Koufax32fan]

There are 12 people who have won an Emmy, Grammy, Oscar and Tony:

Richard Rodgers, Helen Hayes, Rita Moreno, John Gielgud, Audrey Hepburn, Marvin Hamlisch, Jonathan Tunick, Mel Brooks, Mike Nichols, Whoopi Goldberg, Scott Rudin and Robert Lopez.

4 others won all four, but included special or honorary awards: Barbra Streisand, Liza Minnelli, James Earl Jones and Harry Belafonte.

Thanks to Wikipedia.