Beatrice of Portugal (1373–c. 1420) was the daughter of Ferdinand I of Portugal, and Queen of Castile by marriage to John I of Castile. She was also queen regnant or claimant to the throne of Portugal.
Beatrice of Portugal may also refer to:
Beatrice of Portugal (died 1382), daughter of Peter I of Portugal and Inês de Castro, married to Sancho Alfonso Beatrice, Countess of Arundel (c. 1386–1439), natural daughter of John I of Portugal and Inês Pires. Infanta Beatrice, Duchess of Viseu (1430–1506), mother of King Manuel I of Portugal Infanta Beatrice of Portugal (1504–1538) (1504–1538), daughter of Manuel I of Portugal and Maria of Aragon, and married to Charles III, Duke of Savoy Infanta Beatriz of Portugal (1530), daughter of John III of Portugal