Roman name:
Gaius Marius (157 BC - 86 BC), Roman general
Gaius Marius the Younger, son of Gaius Marius
Gaius Marius Victorinus (4th century) Roman
philosopher
Marcus Aurelius Marius, (d.268), Gallic Emperor
Marius Maximus (fl. early 3rd century), Roman senator and biographer of Emperors
Surname:
Clinton Marius (b.1966), South African performer and writer
Johann Simon Mayr (1763 - 1845), German composer
Richard Marius (1933 - 1999),
Reformation scholar
Simon Marius (1573 - 1624), German astronomer (Simon Mayr)
Given name:
Marius Borg Høiby (b.1997), first child of Mette-Marit, Crown Princess of Norway
Marius Constant (1925 - 2004), French composer and conductor
Marius Ebbers (b.1978), German
footballer
Marius Lactacus (b.1964), Romanian footballer
Marius von Mayenburg (b.1972), German actor and playwright
Marius Müller-Westernhagen (b.1948), German musician and actor
Marius Petipa (1819 - 1910), French-Russian ballet dancer / choreographer
Marius Trésor, French footballer
Marius Urzica, Romanian gymnast
Fiction:
Marius the Epicurean, novel and its hero by Walter Pater
Marius Pontmercy, a principal character in Les Misérables
Marius de Romanus, a character in the Vampire
Chronicles universe created by Anne Rice.
Marius,
the narrator of Diablo II cutscenes