Petra (Balearic Catalan: [ˈpetɾə]) is a town and municipality on the Mediterranean island of Majorca, in the Spanish autonomous community of the Balearic Islands. "Petra" means "rock" in Latin.

Petra is the birthplace of St. Junípero Serra (1713-1784), a Franciscan friar who founded the first nine of 21 Spanish missions in California from San Diego to San Francisco.

• Pere Riutort Mestre ( 1935–2021), Majorcan priest, pedagogue, philologue, and liturgist

• Ajuntament de Petra (in Catalan)
• Ajuntament de Petra (in Spanish)