TheNameDB is a name-history and genealogy resource that helps visitors explore the origins of given names and surnames, along with the lives of historical people who bore them. Its database features more than 3,210 given names, 8,033 surnames, and 133,342 historical people. Visitors can browse names alphabetically, discover featured entries, check name popularity, and learn about meanings, linguistic roots, and cultural backgrounds. The site also highlights a daily name and trending baby names, offering ways to explore both established histories and current naming interests.

For surname research, TheNameDB presents possible origins and classifications, including patronymic and topographic names. Its historical profiles feature people from a range of fields, such as writers, politicians, athletes, and educators. Additional tools and resources include name lookup, name comparison, a name generator, family tree exploration, war records, and guides. TheNameDB describes its purpose as connecting people with the stories behind names through research into their origins, histories, and bearers.