Kaleigh is a modern, unique feminine given name of American origin. It gained popularity during the late 20th century, perhaps inspired by other names like Michelle and Stephanie that were prevalent at the time. The name Kaleigh has no clear etymology; it may have been created as a variant spelling of Kaylee or Kaleigh, which are thought to be combinations of "Kay" (a diminutive of Katherine) and "Lee" or "leigh". Alternatively, it could be derived from the Irish surname O'Cadhla, meaning "comely" or "beautiful". The name Kaleigh is sometimes associated with the Irish spelling Caoilfhliath, which means "warlike", but this connection is not universally accepted. In terms of popularity, Kaleigh has never been among the most common names in the United States or other English-speaking countries, adding to its unique and distinctive character.
The name Kaleigh was quite popular during its debut year of 2004 with six babies being named Kaleigh that year.