Porphyry (/ˈpɔːrfɪri/; Greek: Πορφύριος, Porphyrios "purple-clad") may refer to:

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• Porphyry (geology), an igneous rock with large crystals in a fine-grained matrix, often purple, and prestigious Roman sculpture material
• Shoksha porphyry, quartzite of purple color resembling true porphyry mined near the village of Shoksha, Karelia, Russia
• Porphyritic, the general igneous texture of a rock with two distinct crystal (phenocryst) sizes
• Porphyry copper deposit, a primary (low grade) ore deposit of copper, consisting of porphyry rocks

• Mons Porphyrites, the only porphyry quarry worked in the ancient world for the emperor's building works and statuary
• Porphyry Island, in Lake Superior, Canada
• Porphyry Mountain in Alaska, United States
• Porphyry, a system of astrological house division
• Porphyry, a vineyard near Seaham, New South Wales, Australia

• Porphyra, a foliose red algal genus of laver
• Oliva porphyria, a species of sea snail
• Porphyrio, the swamphens, a genus of birds in the rail family
• Porphyrios (whale), a 6th-century whale

• Porphyrion, a giant in Greek mythology
• Pomponius Porphyrion (fl. 2nd or 3rd century), Latin grammarian
• Porphyry (philosopher) (234–305), Neoplatonic philosopher
• Porphyrios of Philippi (fl. early 4th century), bishop of the Metropolis of Philippi, Neapolis and Thasos
• Publilius Optatianus Porfyrius (fl. 4th century), Latin poet
• Porphyry of Gaza, or Saint Porphyrius (347–420), Bishop of Gaza
• Porphyrius the Charioteer (fl. 5th/6th centuries), Roman charioteer
• Porphyrios Dikaios (1904–1971), Greek Cypriot archaeologist
• Porphyrios of Kafsokalyvia (1906–1991), Greek Athonite hieromonk and Eastern Orthodox saint
• Demetri Porphyrios (born 1949), Greek architect
• Porfirije, Serbian Patriarch (born 1961), 46th Patriarch of the Serbian Orthodox Church

• Born in the purple, Porphyrogénnētos , Byzantine term for the children of emperors, after a supposed porphyry-lined birthing room in the palace
• Article titles containing the text "Porphyr"
• Porfirio (disambiguation), various uses, including a Spanish surname
• Porfiry, a Russian given name
• Tyrian purple or Porphyra, a purple-red natural dye
• "Porphyria's Lover", originally published as "Porphyria", a poem by Robert Browning
• Porphyria, a disease giving purple urine
• Porphyrins, a group of organic compounds

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