Joana, Princess of Beira (18 September 1635 – 17 November 1653; Portuguese pronunciation: [ʒuˈɐnɐ]; English: Joan) was a Portuguese infanta (princess), and the eldest surviving daughter of John IV, King of Portugal (the first of the House of Braganza) and his wife Luisa de Guzmán.

[1] Joana was born in Vila Viçosa on 18 September 1635.

Her father created her Princess of Beira, a title subsequently used by the eldest daughter of the monarch.

She died unmarried in Lisbon at the age of 18 on 17 November 1653.

This biography of a member of the Portuguese royal family is a stub.