Margaret Pellegrini (née Williams; September 23, 1923 – August 7, 2013) was an American actress, vaudeville performer and dancer, best known for playing one of the Munchkins from the 1939 film The Wizard of Oz.

When she was helping a relative in a potato chip booth at the Tennessee State Fair, a group of little people came by and asked if she wanted to join their show, Henry Kramer's Midgets.

She was also named the Grand Marshal of that year's annual "Oz-Stravaganza" parade in Chittenango, New York, but health issues prevented her from attending.

Near the time of her death, she was described as a widowed great-great-grandmother living in Glendale, Arizona, with a room in her house devoted to her treasured Oz collectibles.

Pellegrini died on August 7, 2013, in Glendale, Arizona, due to complications from a stroke she had two days earlier.