Isabella FitzRoy may refer to:
- Isabella FitzRoy, Duchess of Grafton (née Bennet, 1668–1723), mother of Charles FitzRoy, 2nd Duke of Grafton
- Isabella Seymour-Conway, Countess of Hertford (née FitzRoy), daughter of Charles FitzRoy, 2nd Duke of Grafton
This disambiguation page lists articles about people with the same name.
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