Adrian Adolph Greenburg, widely known mononymously as Adrian, was an American costume designer whose most famous costumes were for The Wizard of Oz and hundreds of Metro-Goldwyn-Mayer films between 1928 and 1941. He was usually credited onscreen with the phrase "Gowns by Adrian". Early in his career he chose the professional name Gilbert Adrian, a combination of his father's forename and his own.

A costume designer is a person who designs costumes for a film, stage production or television show. The role of the costume designer is to create the characters' outfits or costumes and balance the scenes with texture and colour, etc. The costume designer works alongside the director, scenic, lighting designer, sound designer, and other creative personnel. The costume designer may also collaborate with a hair stylist, wig master, or makeup artist. In European theatre, the role is different, as the theatre designer usually designs both costume and scenic elements.