Coordinates: 48°51′N 2°21′E / 48.85°N 2.35°E
The Gallo-Roman city of Lutetia (also Lutetia Parisiorum in Latin, in French Lutèce) was the predecessor of present-day Paris.
The city was referred to as "Λουκοτοκία" by Strabon, "Λευκοτεκία" by Ptolemeus and "Lutetia" by Julius Caesar. The origin of this name is uncertain.
The name may contain the Celtic root *luco-t-, which means "mouse" and -ek(t)ia, meaning "the mice" and which can be found today in the Breton word logod, the Welsh llygod, and the Irish luch.
Alternatively, it may derive from another Celtic root, luto- or luteuo-, which means "marsh" or "swamp" and which survives today in the Gaelic loth ("marsh") and the Breton loudour ("dirty"). As such, it would be related to other place names in Europe including Lutudarum (Derbyshire, England); Lodève (Luteua) and Ludesse (France); and Lutitia (Germany).
The oppidum of the Gallic tribe of the Parisii was originally believed to be on the Ile de la Cité from Caesar's Gallic Wars.