Placidus

Template:Sister project Placidus is Latin for "placid, gentle, quiet, still, calm, mild, peaceful" and can refer to:

• Placidus (martyr), 4th-century Sicilian martyr
• Lactantius Placidus (c. 350 – c. 400), writer
• Flavius Arcadius Placidus Magnus Felix (480–511), Consul of Rome
• Saint Placidus (6th century), follower of Benedict of Nursia
• Placidus de Titis (also de Titus, Latinization of Placido de Titi, 1603–1668), astrologer
• Placidus Böcken (1690–1752), German Benedictine canon lawyer, Vice-Chancellor of the University of Salzburg
• Placidus Braun (1756–1829), Bavarian Benedictine priest, historian and archivist
• Placidus Fixlmillner (1721–1791), Benedictine priest, first astronomer to compute the orbit of Uranus
• Placidus Nkalanga (1919–2015), Tanzanian Prelate of Roman Catholic Church
• Placidus a Spescha (1752–1833), Swiss monk and Alpine explorer

See also

• Placidian system, for calculating astrological houses
• Lucanus placidus, beetle in the Family Lucanidae
• Placido (disambiguation)
• Placid