A diminutive of Elizabeth-family names, ultimately from Hebrew, meaning God is my oath.
Litzi is a Central European diminutive form, most naturally at home in the German-speaking world as a pet name derived from Elizabeth—one of the most durable names in Western history. Elizabeth comes from the Hebrew *Elisheba*, meaning "my God is abundance" or "my God is an oath," and it entered European consciousness through the New Testament figure of Elizabeth, mother of John the Baptist and cousin of Mary. The name's German and Austrian diminutive tradition is rich: Liesl, Lisi, Lieselotte, and Litzi all derive from the same root, each carrying slightly different regional and social inflections.
The name's most historically striking bearer is Litzi Friedmann (1905–1963), an Austrian communist activist who became the first wife of the British double agent Kim Philby, one of the Cambridge Five who spied for the Soviet Union during the Cold War. Their marriage in Vienna in 1934 was partly arranged to help her escape Austria on a British passport before the rise of Austro-fascism. Her story—intellectual, politically committed, navigating the lethal politics of interwar Europe—gives the name an association with courage under extremity.
In contemporary use, Litzi appeals to parents with Central European heritage who want to honor that background in a form that sounds playful and warm rather than formal. The -zi ending gives it a confection-like quality that suits both a small child and a grown adult, and its rarity in English-speaking countries means it stands out without being difficult to pronounce.