Sydney Guilaroff (November 2, 1907 – May 25, 1997) was a hair stylist during Hollywood’s Golden Age who was the first to receive on-screen credit in films. He worked for more than forty years at the Metro Goldwyn Mayer studios on more than a thousand films. He was instrumental in crafting many of the hairstyles which became the signature looks for numerous film stars.

Over his long and distinguished career, Guilaroff's other clients included Elizabeth Taylor, Lana Turner, Greta Garbo, Lena Horne, Greer Garson, Debbie Reynolds, Ann-Margret, Marilyn Monroe, Katharine Hepburn, Ingrid Bergman, Hedy Lamarr, Kathryn Grayson, Liza Minnelli, Clare Booth Luce, Ginger Rogers, Geraldine Page, Libby Holman, and Nancy Reagan. He was the stylist of choice for such male stars as Cary Grant, Clark Gable, Fred Astaire, James Stewart, Spencer Tracy and Frank Sinatra

Guilaroff won a Primetime Emmy Award for Outstanding Achievement in Hairstyling for a Miniseries or Special for The Two Mrs. Grenvilles (1987) starring Ann-Margret and Claudette Colbert.