Antoine Bruni d'Entrecasteaux is commonly referred to simply as Bruni d'Entrecasteaux or Bruny d'Entrecasteaux, which is a compound surname (derived from his father's surname, Bruni and the family's origins in Entrecasteaux).
Antoine Bruni d'Entrecasteaux kaldes normalt bare Bruni d'Entrecasteaux eller Bruny d'Entrecasteaux, som er et sammensat efternavm (afledt af hans fars efternavn Bruni og familiens oprindelse i Entrecasteaux i det sydøstlige Frankrig).