Abano is an Italian surname of toponymic origin, originally denoting a person from the town of Abano in the Veneto region of northern Italy. The place name Abano derives from Latin Aponus, which is believed to come from an ancient Celtic root ab meaning "water." This Celtic connection reflects the prehistoric presence of Celtic peoples in the Po Valley before the Roman expansion, and ab appears in other Celtic river names across Europe, such as the Abona in Britain and Abus for the Humber. The town of Abano Terme, famous for its thermal springs, further reinforces the link to water, as its Latin name Aponus was associated with the hot springs that gave rise to its modern fame. The surname Abano is most common in Italy, particularly in the northeast where the town of Abano is located. The distribution data from modern resources indicates that while the name is not extremely widespread, it retains a strong geographic concentration. As a family name, it follows a pattern common to many Italian surnames: derived from a place (the *nome di luogo*), it identified families who moved from their ancestral town to other areas within Italy or abroad, thus sometimes serving as a key for genealogical research. Although the name Abano is primarily borne as a surname, some individuals with the surname have gained notable recognition. For instance, Pietro d'Abano (c. 1257–1316) was an Italian philosopher, astrologer, and professor of medicine at the University of Padua. His works, such as the Conciliator differentiarum, sought to reconcile Aristotelian and Islamic-medical traditions, making him a prominent intellectual figure of the later Middle Ages. The prevalence of bearing the place name as a surname in historical records often indicates the migration from the town of Abano Terme to Padua, where many early records of the name are found. Culturally, the surname reflects the enduring influence of geography and local history in Italian family naming. The root ab meaning "water" is a small but significant marker of the Celtic linguistic stratum in present-day Italian toponyms, linking the name to ancient migrations and to the thermal waters that made Abano Terme a spa destination since Roman times. Individuals with this surname can thus trace their heritage to a specific place with a very deep history, bridging Celtic settlement and Roman urban development.