The name Justina has its roots in the Latin language, originating from the word "iustus," which means "just" or "upright." It was a popular name during the Roman era, particularly among early Christian communities, as it carried connotations of righteousness and virtue.

In ancient times, the name Justina was often associated with female saints and martyrs who were revered for their unwavering faith and moral integrity. One of the earliest recorded instances of the name can be found in the 4th century, when St. Justina of Antioch, a young Christian woman, was martyred for refusing to renounce her beliefs.

As Christianity spread throughout Europe, the name Justina gained popularity, particularly in regions influenced by Latin culture. In the 6th century, Justina, the wife of the Byzantine Emperor Justin I, played a significant role in shaping the religious and political landscape of the era.

Throughout the Middle Ages, the name Justina was embraced by noble families and royalty across Europe. Notable figures bearing this name include Justina of Austria (1538-1572), a princess of the House of Habsburg, and Justina Grimaldi (1608-1669), a member of the ruling family of Monaco.

During the Renaissance period, the name Justina continued to be favored, often associated with artists and intellectuals. One prominent figure was Justina Segadora (1668-1749), a renowned Spanish painter and engraver whose works were celebrated for their technical mastery and attention to detail.

In the 19th century, the name Justina gained traction in literary circles. Justina, a novel by Spanish writer Leopoldo Alas "Clarín" (1834-1901), explored themes of morality and social criticism, further cementing the name's association with virtue and principles.

Other notable individuals named Justina include Justina Muñiz Berner (1919-2014), a Cuban-American activist and philanthropist who championed educational causes, and Justina Bričytė (1913-2004), a Lithuanian writer and resistance fighter during World War II.

While the name Justina has its origins in ancient Latin, it has transcended cultural boundaries and found a place in various linguistic traditions, often carrying the same connotations of righteousness and moral uprightness.