Avogadro is an Italian surname, derived from avogaro, a Venetian term for a diocese official (equivalent to avvocato, advocatus, "advocate"). In 1389, bishop Nicolò Beruti, made the office of avogaro hereditary, and a number of noble families with the name Avogaro or Avogadro developed over the following centuries, in Brescia, Vercelli and Treviso.
- Albert Avogadro (d. 1214), canon lawyer and Latin Patriarch of Jerusalem
- Amedeo Avogadro (1776–1856), chemist; named for Amedeo Avogadro:
- Oscar Avogadro (1951–2010), lyricist
| disambiguation page lists articles associated with the title Avogadro.
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