A Slavic diminutive of Sophia, from Greek meaning 'wisdom.'
Zosia (pronounced ZOH-sha) is the beloved Polish diminutive of Zofia, the Slavic form of Sophia — from the ancient Greek sophia (σοφία), meaning wisdom. While Sophia has been a pan-European name since the Byzantine era, Zosia developed its own distinct identity in Polish culture, appearing as a tender and domestic form used between family members and close friends.
Its most celebrated literary appearance is in Adam Mickiewicz's nineteenth-century epic Pan Tadeusz (1834), where Zosia is a young noblewoman whose innocence and grace anchor the romantic subplot — cementing the name's association with pastoral beauty and Polish national identity. In the twenty-first century, Zosia crossed into English-speaking awareness largely through actress Zosia Mamet, daughter of playwright David Mamet, who played Shoshanna on the HBO series Girls. Her prominent public profile introduced the name to American and British audiences who had never encountered its Polish charm.
Zosia occupies an appealing niche: familiar enough through Sophia to feel accessible, yet distinctive enough to feel truly individual. It pronounces with an effortless musicality — that soft "sh" sound transforming an already lovely name into something that feels whispered rather than said.