Margaret Peverell, Countess of Derby (b. circa 1114, Nottinghamshire, England), was an English noblewoman who lived at Tutbury Castle in Staffordshire, England.
Margaret was the daughter of William Peverel the Younger of Peveril Castle in Derbyshire and his wife, Avicia de Lancaster. Her grandfather was William Peverel.
She married Robert Ferrers and thus became Countess of Derby. She was the mother of William de Ferrers, 3rd Earl of Derby, Walkelin de Ferrers and a daughter, Petronella.
She died in 1154 and was buried in Merevale Abbey alongside her husband.