Valentinus

Valentinus is a Roman masculine given name derived from the Latin word "valens" meaning "healthy, strong". It may refer to:

Churchmen

 * Pope Valentine (died 827)
 * Saint Valentine, 3rd century Christian saint
 * Valentinus (Gnostic) (died c. 150), early Christian gnostic theologian
 * Valentinus Paquay (1828–1905), Friar Minor
 * Valentinus Smalcius (1572–1622), German Socinian theologian

Emperors and pretenders

 * Valentinus (rebel), 4th-century Roman exile who attempted a conspiracy in Roman Britain
 * Valentinus (usurper) (died 644), Byzantine general and usurper, father of empress Fausta

Scholars

 * Basilius Valentinus, 15th century monk from Erfurt who may have described bismuth
 * Valentinus Lublinus (16th-century–16th-century), 16th-century Polish physician and editor
 * Valentinus Otho (died 1603), German mathematician and astronomer
 * Valentinus Nabodus (1523–1593), German mathematician, astronomer and astrologer

Biology

 * Anacyclus valentinus, a species of aster
 * Ischnocolus valentinus, a small, old-world tarantula
 * Squalius valentinus, a species of freshwater fish in the carp family Cyprinidae