Arantxa or Arancha is a Basque feminine given name, meaning "thornbush". It is a hypocoristic for Maria Arantzazu, a shrine of Mary, mother of Jesus, in Guipuscoa. People with the name Arantxa include:
- Arantxa H.
- Arantxa Ochoa
- Arantxa Parra Santonja
- Arantxa Urretavizcaya
- Arantxa Sánchez Vicario
- Arantxa Rus