Jilliann is a female name with American English pronunciation as JIL-ee-an (/ˈdʒɪliˌæn/). It is a variation of the name Jillian. The origin of the name Jilliann is uncertain, but it is believed to have derived from the masculine name Julian. Jilliann has been used as a given name for baby girls in the United States since at least the 1970s. While its popularity has fluctuated over the years, it has remained relatively steady, consistently ranking within the top 15,000 names for newborns in recent years. The name Jilliann carries no specific associations or meanings beyond its usage as a personal identifier.