The Willis Family Tree (Andrew) is a genealogy website maintained by Andrew R. Willis using the webtrees platform. It provides access to a collection of family trees documenting individuals, families, and their relationships across multiple branches. The site includes the Willis family tree and other named trees, with records and research organized for browsing and discovery.

Visitors can explore genealogical information through charts such as ancestor, descendant, compact tree, fan, hourglass, and pedigree views, as well as family books, timelines, and relationship tools. Search features include general, phonetic, and advanced searches. The website also offers lists of branches, families, individuals, and media objects, along with calendars and reports covering births, deaths, burials, marriages, ancestors, descendants, and vital records. Users can review shared notes and request a new account. The site notes that no news articles have been submitted and directs visitors to Andrew R. Willis for technical support or genealogy questions.