The Pityusic Islands,[1][2] often referenced simply as the Pityuses (Catalan: Pitiüses [pitiˈuzəs], Spanish: Pitiusas [pitiˈusas]; from the Greek πιτύα pitýa, pine tree), or commonly but informally (and ambiguously) as the Pine Islands, is the name given collectively to the Balearic Islands of Ibiza (Catalan: Eivissa), Formentera, S'Espalmador and other small islets in the Mediterranean Sea.

The islands are situated approximately 100 kilometres (62 miles) southwest of the island of Majorca, and approximately 80 km (50 mi) east of the Cap de la Nau in the Iberian Peninsula.

The first known name of the islands was the Ancient Greek geonym Πιτυοῦσσαι Pityûssai ("covered in pine trees").

The two largest of the islands, under the names Ebyssus (Ibiza) and Ophiusis (Formentera), were listed in Claudius Ptolemy's Geography (2nd century CE).

Initially, they were administratively part of the same insular council (of Ibiza and Formentera), but since 2007 they are now separated between the insular council of Ibiza and the insular council of Formentera (each one is also assimilated to a single comarca), which are two of the four main administrative subdivisions of the province (and autonomous community) of the Balearic Islands.