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Callinicus IV
Callinicus IV (Greek: Kallinikos), numbered Kallinikos V in some catalogs, was Ecumenical Patriarch of Constantinople in two terms, 1801–1806 and 1808–1809, each ended by forced removal.
Calliope (Καλλιόπη)
Calliope (Καλλιόπη, Kalliope), eldest and chief of the nine Greek Muses, Muse of epic poetry and eloquence, daughter of Zeus and Mnemosyne, mother of Orpheus, judge of the Adonis dispute, namesake of the steam calliope.
Callista Gingrich
Callista L. Gingrich (born 1966) is an American businesswoman and documentary producer, wife of Newt Gingrich; U.S. Ambassador to the Holy See 2017–2021, later nominated Ambassador to Switzerland and Liechtenstein.
Callisto (Καλλιστώ) (mythology)
Callisto (Καλλιστώ), Arcadian nymph or princess, companion of Artemis; loved by Zeus, mother of Arcas, changed into a bear and set as Ursa Major; parentage, transformer, and ending vary across Hesiod, Apollodorus, Ovid, and Pausanias.
Callsign (company)
Callsign is a London-based identity-verification and fraud-prevention company founded in 2012 by Zia Hayat and Ian Welch, selling adaptive authentication to banks and large enterprises.
Callum Anderson
Callum Anderson, British Labour politician, MP for Buckingham and Bletchley since 4 July 2024; born in Luton, first in family at university; PPS at DSIT.
Calluna Pharma
Calluna Pharma is a clinical-stage biotechnology company in Oslo, Norway, formed in 2023 from the merger of Oxitope Pharma and Arxx Therapeutics, with a $81.6 million Series A in 2024.
Calmecac
The calmecac (calmécac) was the temple school of the Aztec (Mexica) state, where sons of nobles trained in religion, the calendar, oratory, warfare, and government.
Calouste Gulbenkian
Calouste Sarkis Gulbenkian (1869–1955) was an Ottoman-born Armenian oil intermediary who brokered the deals creating the Middle East oil industry and died possibly the world's richest man.
CalPERS
CalPERS, the California Public Employees' Retirement System, is the largest US public pension fund, administering retirement benefits for 2.4 million California public employees since 1932.
Calpurnia (wife of Caesar)
Calpurnia, daughter of L. Calpurnius Piso Caesoninus, was Julius Caesar's last wife, married in 59 BCE as a political alliance. Known for her prophetic dream before the Ides of March and for giving Caesar's papers and 4,000 talents to Mark Antony.
Calque
Calque, or loan translation: a word or phrase built by literally translating each part of a foreign model, e.g. French gratte-ciel from skyscraper; distinct from loanwords and semantic loans, classified by Haugen (1950) under loanshifts.
CalSTRS
CalSTRS, the California State Teachers' Retirement System, is a public pension fund for California public school educators, the world's largest educator-only fund with about $373 billion in assets.
Caltagirone S.p.A.
Caltagirone S.p.A. is a Milan-listed Italian industrial holding company, controlled by Francesco Gaetano Caltagirone since 1984, operating in cement, construction, publishing, and real estate through Cementir Holding, Caltagirone Editore, and Vianini Lavori.
Caltrans
Caltrans, formally the California Department of Transportation, is the state agency that designs, builds, and maintains California's highways, overseeing over 50,000 miles of lanes since 1973.
Calum Miller
Calum Miller, full name Calum Alexander Miller, is a British Liberal Democrat politician who has been MP for Bicester and Woodstock since the 2024 general election.
Calusa
The Calusa were a non-agricultural Native American people of southwest Florida whose kingdom, ruled from the capital Mound Key, was the most powerful polity in the region at Spanish contact.
Calvary
Calvary, also called Golgotha, is the Christian name for the site of Jesus's crucifixion in Jerusalem, venerated since the fourth century at the Church of the Holy Sepulchre.
Calvin B. Hoover
Calvin B. Hoover (Calvin Bryce Hoover) was an American economist at Duke University, known as the founder of comparative economics and president of the American Economic Association in 1953.
Calvin Bailey
Calvin Bailey (Calvin George Bailey), Labour MP for Leyton and Wanstead since July 2024 and UK Minister for Veterans and People at the Ministry of Defence since 12 June 2026; former RAF Wing Commander, Operation Pitting detachment commander.
Calvin Coolidge
Calvin Coolidge, nicknamed Silent Cal, was the thirtieth U.S. president (1923–1929), a Vermont-born Republican and former Massachusetts governor who succeeded Warren Harding, cut taxes and spending, won 54 percent in 1924, and signed the 1924 National Origins Act.
Calvin Ellis Stowe
Calvin Ellis Stowe (1802–1886) was an American biblical scholar and professor of sacred literature who advanced public education and was the husband of Harriet Beecher Stowe.
Calvin Ford
Calvin Ford is the name of two Americans: a great-great-grandson of Henry Ford who became chairman of Livingston FC in 2025, and a Baltimore boxing trainer.
Calvin Graham
Calvin Leon Graham (1930-1992), youngest U.S. serviceman of World War II, enlisted in the Navy at 12, fought aboard USS South Dakota at Guadalcanal, won the Bronze Star and Purple Heart, then spent decades restoring his record.
Calvin Perry Stone
Calvin Perry Stone (1892–1954) was an American experimental psychologist at Stanford University, known for research on albino rat behavior and president of the American Psychological Association in 1941.
Calvin Robinson
Calvin Robinson is an Anglican priest and conservative commentator, denied Church of England ordination in 2022, who has served in six Anglican and Old Catholic jurisdictions.
Calvin's Geneva
Calvin's Geneva is the city of Geneva under John Calvin's leadership of its Reformed church, from his arrival in 1536 to his death in 1564.
Calvine UFO photograph
The Calvine UFO photograph, taken 4 August 1990 near Calvine, Perthshire, Scotland, is the sole surviving print of six images of a diamond-shaped object with a jet; MoD examined the negatives inconclusively and analysis remains contested.
Calvinistic Methodism
Calvinistic Methodism, also called Reformed Methodism, is the Welsh evangelical revival combining Methodist conversion with Calvinist doctrine, founded by Howell Harris and Daniel Rowland in the 1730s.
Calypso (mythology)
Calypso (Καλυψώ), "she that conceals", is a nymph daughter of Atlas in Greek myth, possibly Homer's invention, who held Odysseus seven years on Ogygia and vainly offered immortality.