| Joana | |
| Princess of Beira | |
| House: | Braganza |
| Father: | John IV of Portugal |
| Mother: | Luisa de Guzmán |
| Birth Date: | 18 September 1635 |
| Birth Place: | Ducal Palace of Vila Viçosa, Vila Viçosa, Portugal |
| Death Place: | Ribeira Palace, Lisbon, Portugal |
| Burial Place: | Pantheon of the House of Braganza |
Joana, Princess of Beira (18 September 1635 - 17 November 1653; pronounced as /pt/;) 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.
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. She was first buried at the Jerónimos Monastery and then moved to the Monastery of São Vicente de Fora.
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