The name Julia is an American baby name. In American the meaning of the name Julia is: Youthful. Swedish Meaning: The name Julia is a Swedish baby name. In Swedish the meaning of the name Julia is: Youth.Greek Meaning: The name Julia is a Greek baby name. In Greek the meaning of the name Julia is: Downy. Hairy. Derived from the clan name of Roman dictator Gaius Julius Caesar.Latin Meaning: The name Julia is a Latin baby name.In Latin the meaning of the name Julia is: Young. The feminine form of Julius. A character in Shakespeare's play 'Two Gentlemen of Verona'. Shakespearean Meaning: The name Julia is a Shakespearean baby name.he name Julia is a Latin baby name. In Latin the meaning of the name Julia is: Young. The feminine form of Julius. A character in Shakespeare's play 'Two Gentlemen of Verona'.