From the sixth letter of the Greek alphabet; associated with seeking or searching.
Zeta is the sixth letter of the Greek alphabet, descended from the Phoenician letter zayin, and its use as a personal name is an interesting case of alphabetic symbolism becoming humanized. In ancient and classical Greek culture, individual letters of the alphabet were sometimes invoked in numerical or mystical contexts — zeta carries the numerical value six — but the transition of Zeta into a given name proper is largely a Welsh and Mediterranean phenomenon of the modern era. In Wales, where the name Catherine Zeta-Jones has brought it global recognition, Zeta was used as a feminine given name from at least the nineteenth century, likely as a variant or phonetic rendering of names in the Sita-Zita family or simply as an adoption of the Greek letter for its crisp, unusual sound.
Catherine Zeta-Jones (born 1969 in Swansea, Wales) is by far the name's most prominent modern bearer, and her Academy Award-winning career — spanning films from "The Mask of Zorro" to "Chicago" — gave Zeta a glamorous, international visibility it had never previously enjoyed. Her middle name Zeta honored a great-aunt, grounding the seemingly exotic choice in entirely ordinary Welsh family practice. The name also appears in physics and mathematics (the Riemann zeta function, central to the deepest unsolved problem in mathematics, the Riemann Hypothesis), giving it an unexpected dimension of scientific resonance.
As a given name today, Zeta occupies a compelling space: genuinely ancient in origin, globally rare in use, and possessed of a spare elegance that needs no explanation or nickname. Its two crisp syllables and the final open vowel give it a modern, even futuristic quality, while its Greek roots and Welsh heritage connect it to two of Europe's oldest living cultures. For parents seeking brevity and distinction in equal measure, Zeta delivers both.