Porphyry or porphyrios may refer to:
Geology 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
Places 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
Animals and plants 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
People and characters 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 (), 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
See also Born in the purple, Porphyrogénnētos , Byzantine term for the children of emperors, after a supposed porphyry-lined birthing room in the palace
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