Robert de Ferrers or Robert Ferrers may refer to:
- Robert de Ferrers, 1st Earl of Derby (c. 1062–1139)
- Robert de Ferrers, 2nd Earl of Derby
- Robert de Ferrers, 6th Earl of Derby (1239–1279)
- Robert de Ferrers, 2nd Baron Ferrers of Chartley
- Robert de Ferrers, 4th Baron Ferrers of Chartley
- Robert de Ferrers, 4th Baron Ferrers of Chartley (ca. 1358 – 1413)
- Robert Farrar (MP), 16th-century politician
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